X (The letter) BT Boeing airplanes X-ray astronomy BT Alphabet Research aircraft [QB472] X-1 (Bell supersonic plane) X-48A (Research plane) BT Astronomy USE Bell X-1 (Supersonic plane) USE X-48 (Research plane) Space astronomy X-10 Graphite Reactor X-48B (Research plane) X-rays UF Graphite Reactor USE X-48 (Research plane) NT X-ray binaries ORNL Graphite Reactor X-48C (Research plane) X-ray bursts X-10 Reactor USE X-48 (Research plane) X-ray sources, Galactic BT Nuclear reactors—United States X.500 directory standard (Telecommunication) X-ray binaries (Not Subd Geog) X-10 Reactor [TK5105.587] [QB830] USE X-10 Graphite Reactor UF OSI directory (Telecommunication) UF X-ray binary stars X-15 (Rocket aircraft) (Not Subd Geog) BT Electronic mail systems—Standards BT Double stars UF North American X-15 (Rocket aircraft) OSI (Computer network standard) X-ray astronomy BT Astronautics RT Directory services (Computer network X-ray binary stars Manned space flight technology) USE X-ray binaries North American airplanes (Military aircraft) X-cars X-ray burst sources Rocket planes USE General Motors X-cars USE X-ray bursts Winged spacecraft X chromosome X-ray bursters — Sounds UF Chromosome X USE X-ray bursts BT Sounds BT Sex chromosomes X-ray bursts Space flight sounds — Abnormalities (May Subd Geog) UF Burst sources, X-ray X-17 (Ballistic missile) (Not Subd Geog) BT Sex chromosome abnormalities Bursts, X-ray UF Lockheed X-17 (Ballistic missile) NT Adrenomyeloneuropathy Sources of X-ray bursts BT Ballistic missiles X-linked mental retardation X-ray burst sources X-20 (Space glider) (Not Subd Geog) X-country ski trails X-ray bursters UF Dyna-Soar (Space glider) USE Cross-country ski trails BT X-ray astronomy BT Reusable space vehicles X disease in cattle (May Subd Geog) NT Gamma ray bursts X-22 (VTOL airplane) (Not Subd Geog) UF Hyperkeratosis X-ray sources, Galactic BT Vertically rising aircraft BT Cattle—Diseases X-ray contrast media X-31 (Jet fighter plane) (Not Subd Geog) X-ers USE Radiographic contrast media UF X-31A (Jet fighter plane) USE Generation X X-ray crystallography (May Subd Geog) BT Jet fighter planes X-Factor (Fictitious characters) (Not Subd Geog) [QD945] X-31A (Jet fighter plane) X-files fiction (Not Subd Geog) BT Crystallography USE X-31 (Jet fighter plane) BT Science fiction — Computer programs X-32 (Jet fighter plane) (Not Subd Geog) X-Force (Fictitious characters) (Not Subd Geog) — Technique UF Boeing Joint Strike Fighter X generation NT Rietveld method Boeing X-32 (Jet fighter plane) USE Generation X X-ray densitometry in dendrochronology Joint Strike Fighter, Boeing X-Lecia, Stadion (Warsaw, Poland) BT Dendrochronology BT Jet fighter planes USE Dziesięciolecia Stadion (Warsaw, Poland) Radiography Stealth aircraft X-linked mental retardation (May Subd Geog) X-ray densitometry in medicine X-33 (Research plane) (Not Subd Geog) [RC574] BT Radiography, Medical UF Lockheed Martin X-33 (Research plane) UF XLMR (Disease) X-ray diagnosis X-33 Advanced Technology Demonstrator BT Intellectual disability USE Diagnosis, Radioscopic (Research plane) X chromosome—Abnormalities X-ray diffraction imaging (May Subd Geog) BT Launch vehicles (Astronautics) NT Adrenoleukodystrophy UF Diffraction imaging, X-ray Lockheed Martin aircraft Charcot-Marie-Tooth disease Imaging, X-ray diffraction Research aircraft Duchenne muscular dystrophy Topography, X-ray Reusable space vehicles Fragile X syndrome X-ray topography X-33 Advanced Technology Demonstrator (Research Lesch-Nyhan syndrome BT Radiography plane) Lowe's syndrome X-ray diffractometer USE X-33 (Research plane) Norrie's disease UF Diffractometer, X-ray X-34 (Research plane) (Not Subd Geog) Pseudo-pseudohypoparathyroidism BT X-rays—Equipment and supplies UF Orbital Sciences X-34 (Research plane) Rett syndrome — Calibration (May Subd Geog) X-34 Advanced Technology Demonstrator VATER syndrome X-ray emission, Proton-induced (Research plane) X-mas USE Proton-induced X-ray emission X-34 Technology Testbed Demonstrator USE Christmas X-ray emission spectroscopy (Research plane) X-Men (Fictitious characters) (Not Subd Geog) USE X-ray spectroscopy BT Launch vehicles (Astronautics) X-Men (Game) X-ray film-screen systems Orbital Sciences aircraft [GV1469.35.X25] USE Screen-film radiography Research aircraft BT Video games X-ray films Reusable space vehicles X-Men films USE Radiography—Films X-34 Advanced Technology Demonstrator (Research BT Science fiction films X-ray fluorescence analysis plane) X-Men versus Street Fighter (Game) USE X-ray spectroscopy USE X-34 (Research plane) USE X-Men vs. Street Fighter (Game) X-ray holography (May Subd Geog) X-34 Technology Testbed Demonstrator (Research X-Men vs. Street Fighter (Game) UF Microholography plane) [GV1469.35.X] BT Holography USE X-34 (Research plane) UF X-Men versus Street Fighter (Game) X-ray intensifying screens X-35 (Jet fighter plane) BT Video games USE Screen-film radiography USE F-35 (Military aircraft) X Network Filing System (Computer network protocol) X-ray lasers X-43A (Hypersonic plane) (Not Subd Geog) UF XNFS (Computer network protocol) UF Lasers, X-ray UF Boeing X-43A (Hypersonic plane) BT Computer network protocols BT Nuclear-pumped lasers HXRV (Hypersonic plane) X-rated movie theaters X-ray lithography X-43A Hyper-X Research Vehicle USE Adult movie theaters BT Lithography BT Boeing airplanes X-ray absorptiometry, Dual-energy X-rays—Industrial applications Hypersonic planes USE Dual-energy X-ray absorptiometry X-ray micro-computed tomography Research aircraft X-ray absorption fine structure USE Microcomputed tomography Rocket planes UF Fine structure, X-ray absorption X-ray micro-CT X-43A Hyper-X Research Vehicle XAFS (X-ray absorption fine structure) USE Microcomputed tomography USE X-43A (Hypersonic plane) BT Absorption spectra X-ray microanalysis X-48 (Research plane) (Not Subd Geog) X-ray spectroscopy BT Microprobe analysis UF Boeing X-48 (Research plane) NT Extended X-ray absorption fine structure X-ray microcomputed tomography Boeing X-48A (Research plane) X-ray absorption near edge structure USE Microcomputed tomography Boeing X-48B (Research plane) X-ray absorption near edge structure X-ray microCT Boeing X-48C (Research plane) UF Fine structure, Near edge X-ray absorption USE Microcomputed tomography Boeing-Cranfield X-48 (Research plane) Near edge structure, X-ray absorption X-ray microscope Boeing-Cranfield X-48A (Research plane) Near edge X-ray absorption fine structure USE X-ray microscopes Boeing-Cranfield X-48B (Research plane) NEXAFS (Near edge X-ray absorption fine X-ray microscopes (May Subd Geog) Boeing-Cranfield X-48C (Research plane) structure) [QH212.X2] X-48A (Research plane) XANES (X-ray absorption near edge structure) UF X-ray microscope [Former heading] X-48B (Research plane) BT X-ray absorption fine structure BT Microscopes X-48C (Research plane) X-ray analysis, Windowless energy-dispersive USE Windowless energy-dispersive X-ray analysis

X-1 USE Windowless energy-dispersive X-ray analysis X-ray microscopy (May Subd Geog) NT Auger effect When this heading is assigned to works on an [QH212.X2] Diagnosis, Fluoroscopic individual family, the appropriate diacritical marks, if any, are included in the heading in the catalog record. BT Microscopy Electron spectroscopy X-ray microtomography Expertising, X-ray Xá Hốc (Vietnamese people) USE Microcomputed tomography Fluoroscopy USE Kháng (Vietnamese people) X-ray mutagenesis Grenz rays Xá Khao (Vietnamese people) BT Mutagenesis N-rays USE Kháng (Vietnamese people) Radiogenetics Solar x-rays Xa La Vang language X-ray optics X-ray astronomy USE Mang language [TA1775] X-ray sources, Galactic Xa language UF Roentgen optics — Apparatus and supplies USE Sedang language BT Physical optics USE X-rays—Equipment and supplies Xa Long Tan, Battle of, Vietnam, 1966 X-ray photoelectron spectroscopy (May Subd Geog) — Diffraction USE Long Tan, Battle of, Vietnam, 1966 UF Electron spectroscopy for chemical analysis [QC482.D5] Xã Mảng (Southeast Asian people) ESCA (Electron spectroscopy for chemical BT Diffraction USE Phunoi (Southeast Asian people) analysis) — Equipment and supplies Xa Mang (Vietnamese people) XPS (X-ray photoelectron spectroscopy) UF X-rays—Apparatus and supplies [Former USE Mang (Vietnamese people) BT Photoelectron spectroscopy heading] Xá phó (Asian people) X-ray photogrammetry NT X-ray diffractometer USE Phula (Asian people) BT Photogrammetry — — Tariff Xá Quãng Lâm (Vietnamese people) Radiography USE Tariff on X-ray equipment and supplies USE Kháng (Vietnamese people) X-ray photography — Industrial applications (May Subd Geog) Xa-tcx-atcu (Wash. : Lake) USE Radiography NT Radiography, Industrial USE Sammamish, Lake (Wash.) X-ray scattering X-ray lithography Xá Tú Lăng (Vietnamese people) USE X-rays—Scattering — Physiological effect (May Subd Geog) USE Kháng (Vietnamese people) X-ray small-angle scattering NT Plants—Effect of X-rays on Xa Xam Khoong (Southeast Asian people) USE Small-angle x-ray scattering — Polarization USE Phunoi (Southeast Asian people) X-ray sources, Galactic (Not Subd Geog) [QC482.P6] Xá Xeng (Southeast Asian people) UF Galactic X-ray sources BT Polarization (Nuclear physics) USE Phunoi (Southeast Asian people) Sources of X-rays, Galactic — Safety measures Xá Xúa (Vietnamese people) BT Galaxies NT Shielding (Radiation) USE Kháng (Vietnamese people) X-ray astronomy — Scattering Xaasonke language X-ray bursts [QC482.S3] USE Kassonke language X-rays UF X-ray scattering Xaayo (African people) NT Cygnus A BT Scattering (Physics) USE Khayo (African people) Cygnus X-3 NT Small-angle x-ray scattering Xac Site (Mexico) SS433 (Astronomy) — Spectra USE Xoc Site (Mexico) Supernovae — Therapeutic use (May Subd Geog) Xacca family — Accretion X-rays in dentistry USE Sciacca family UF Accretion in galactic x-ray sources USE Teeth—Radiography Xacriaba Indians (May Subd Geog) BT Accretion (Astrophysics) X-rays in obstetrics [F2520.1.X33] X-ray spectrometer (May Subd Geog) USE Radiography in obstetrics UF Xakriabá Indians BT Spectrometer X-rays in stomatology BT Indians of South America—Brazil NT Tender x-ray spectrometer USE Mouth—Radiography Xadi (African people) X-ray spectroscopy X, Stadion (Warsaw, Poland) USE Hdi (African people) [QC482.S6 (Radiation physics)] USE Dziesięciolecia Stadion (Warsaw, Poland) Xadi language [QD96.X2 (Analytical chemistry)] X Window System (Computer system) USE Hdi language UF Emission spectroscopy, X-ray BT Windows (Computer programs) XAFS (X-ray absorption fine structure) Energy dispersive x-ray spectroscopy X Y Z Affair, 1797-1798 USE X-ray absorption fine structure Excitation analysis, Fluorescent USE XYZ Affair, 1797-1798 Xagh̄ra Cliffs (Malta) Fluorescence analysis, X-ray X zone UF Ferdiem Cliffs (Malta) Fluorescent excitation analysis USE Zona reticularis Irdum tax-Xagh̄ra (Malta) Fluorescent x-ray spectroscopy X1/9 automobile Rdum tax-Xagh̄ra (Malta) X-ray emission spectroscopy USE Fiat X1/9 automobile Redum Ferdium (Malta) X-ray fluorescence analysis X3 sport utility vehicle Redum Ta Shaghra (Malta) XES (X-ray emission spectroscopy) USE BMW X3 sport utility vehicle Shaghra Cliffs (Malta) BT Spectrum analysis X3D (Standard) BT Cliffs—Malta NT Dual-energy X-ray absorptiometry UF Extensible 3D graphics (Standard) Xagua Indians Proton-induced X-ray emission BT Computer animation—Standards USE Achagua Indians Surface extended X-ray absorption fine Three-dimensional display systems Xagua language structure X10 (Power line control protocol) USE Achagua language Tender x-ray spectroscopy BT Home automation—Standards Xakas language Windowless energy-dispersive X-ray analysis X86 assembly language (Computer program language) USE Khakass language X-ray absorption fine structure [QA76.73.X16] Xakriabá Indians X-ray spectroscopy, Ultrasoft BT Assembly languages (Electronic computers) USE Xacriaba Indians [QC482.S6] Xa (Asian people) Xäläc Site (Azerbaijan) UF Ultrasoft X-ray spectroscopy USE Giay (Asian people) UF Khaladzh Site (Azerbaijan) X-ray spectroscopy in archaeology (May Subd Geog) Lati (Asian people) Khalaj Site (Azerbaijan) [CC79.X73] Si La (Asian people) BT Azerbaijan—Antiquities BT Archaeology—Methodology Xa (Southeast Asian people) Xalmolonga Hacienda (Malinalco, Mexico) X-ray telescope USE Sedang (Southeast Asian people) USE Hacienda de Xalmolonga (Malinalco, Mexico) USE X-ray telescopes Xá Ái (Vietnamese people) Xaltocan Site (Mexico) X-ray telescopes (May Subd Geog) USE Kháng (Vietnamese people) BT Mexico—Antiquities UF X-ray telescope [Former heading] Xá Bung (Vietnamese people) Xalwa language BT Telescopes USE Kháng (Vietnamese people) USE Myene language X-ray topography Xá Cẩu (Southeast Asian people) /Xam (African people) USE X-ray diffraction imaging USE Khmu' (Southeast Asian people) USE San (African people) X-ray tubes Xa Chung Cha (Asian people) Xam Khong (Southeast Asian people) [TK7871.79.X2] USE Giay (Asian people) USE Phunoi (Southeast Asian people) BT Electron tubes Xa chung chá language Xamacoco Indians Radiography USE Bouyei language USE Chamacoco Indians X-rays Xã Cống (Southeast Asian people) Xamanhá Site (Mexico) [QC480-QC482.3] USE Phunoi (Southeast Asian people) [F1435.1.X26] UF Rays, Roentgen Xá Dặng (Vietnamese people) BT Mexico—Antiquities Roentgen rays USE Kháng (Vietnamese people) Xambioa Indians Roentgenograms Xa-điêng (Southeast Asian people) USE Caraja Indians BT Electromagnetic waves USE Stieng (Southeast Asian people) Xambioa language Ionizing radiation Xá Đón (Vietnamese people) USE Caraja language Radiation USE Kháng (Vietnamese people) Xamia RT Cathode rays Xa family (Not Subd Geog) USE Callophrys Radiography Here are entered works on families with the Xamicoco Indians Vacuum-tubes surnames Xa or Xã. USE Chamacoco Indians

X-2 Xanadu (Extinct city) Icteridae NT Tribonematales USE Shangdu (Extinct city) NT Yellow-headed blackbird Vaucheriales Xananwa (African people) Xanthocephalus xanthocephalus Xanthophyllomyces (May Subd Geog) USE Gananwa (African people) USE Yellow-headed blackbird [QK629.C97 (Mycology)] Xananwa dialect Xanthocyparis BT Cystofilobasidiaceae USE Gananwa dialect USE Callitropsis NT Xanthophyllomyces dendrorhous Xancidae Xanthocyparis nootkatensis Xanthophyllomyces dendrorhous (May Subd Geog) USE Turbinellidae USE Callitropsis nootkatensis [QK629.C97 (Mycology)] Xandarosina Xanthogenic acid BT Xanthophyllomyces USE Trachyleberididae USE Xanthic acids Xanthophylls Xander Holmes (Fictitious character) Xanthoma UF Luteins USE Holmes, Xander (Fictitious character) UF Vitiligoidea BT Carotenes XANES (X-ray absorption near edge structure) Xanthelasma Xanthophyta USE X-ray absorption near edge structure BT Cutaneous manifestations of general diseases USE Xanthophyceae Xangô (Cult) (May Subd Geog) Lipids—Metabolism—Disorders Xanthorhoe (May Subd Geog) BT Afro-Brazilian cults Xanthomonas (May Subd Geog) [QL561.G6 (Zoology)] Xanten (Germany) [QR82.P78 (Microbiology)] BT Geometridae — History BT Pseudomonadaceae NT Xanthorhoe bulbulata — — Bombardment, 1945 NT Xanthomonas albilineans Xanthorhoe bulbulata (May Subd Geog) BT Bombing, Aerial—Germany Xanthomonas campestris [QL561.G6 (Zoology)] World War, 1939- Xanthomonas malvacearum UF Cidaria bulbulata 1945—Campaigns—Germany Xanthomonas manihotis BT Xanthorhoe Xanth (Imaginary place) (Not Subd Geog) Xanthomonas pruni Xanthoria (May Subd Geog) BT Imaginary places Xanthomonas albilineans (May Subd Geog) [QK585.T44 (Botany)] Xanthan gum [QR82.P78 (Microbiology)] BT Teloschistaceae [QR92.X35] UF Agrobacterium albilineans Xanthorrhoea (May Subd Geog) BT Microbial polysaccharides Bacterium albilineans [QK495.X3 (Botany)] Stabilizing agents Phytomonas albilineans [SB413.X36 (Ornamental plants)] Xanthates (May Subd Geog) Pseudomonas albilineans UF Black boys (Plants) UF Xanthic acid salts BT Xanthomonas Blackboys (Plants) BT Organosulfur compounds Xanthomonas campestris (May Subd Geog) Grass trees Xanthic acids [QR82.P78 (Microbiology)] Grasstrees NT Potassium ethylxanthate UF Bacillus campestris Xanthorrhoeas Starch xanthate Bacterium campestris Yaccas Xanthelasma Citrus canker bacteria Yackas USE Xanthoma Phytomonas campestris Yakkas Xanthene Pseudomonas campestris BT Xanthorrhoeaceae UF Diphenylene methane oxide Xanthomonas campestris campestris NT Xanthorrhoea australis Methylene diphenylene oxide Xanthomonas campestris pv. citri Xanthorrhoea australis (May Subd Geog) Tricyclic dibenzopyran Xanthomonas citri [QK495.X3] BT Heterocyclic compounds BT Xanthomonas UF Austral grass tree NT Thioxanthenes Xanthomonas campestris campestris Australian grass tree Xanthene dyes USE Xanthomonas campestris BT Xanthorrhoea — Derivatives (May Subd Geog) Xanthomonas campestris pv. citri Xanthorrhoeaceae (May Subd Geog) NT Rhodamine B USE Xanthomonas campestris [QK495.X3 (Botany)] Xanthene dyes Xanthomonas citri BT Asparagales BT Chemical tests and reagents USE Xanthomonas campestris NT Xanthorrhoea Dyes and dyeing Xanthomonas diseases (May Subd Geog) Xanthorrhoeales Xanthene [SB741.X35] USE Asparagales NT Rhodamine B BT Bacterial diseases of plants Xanthorrhoeas Xanthic acid salts NT Anthurium bacterial blight USE Xanthorrhoea USE Xanthates Cassava bacterial blight Xanthos (Ancient city) Xanthic acids Common bean blight USE Xanthos (Extinct city) UF Xanthogenic acid Sugarcane leaf scald Xanthos (Extinct city) BT Organic acids Xanthomonas malvacearum (May Subd Geog) UF Xanthos (Ancient city) [Former heading] NT Xanthates [QR82.P78] Xanthus (Extinct city) Xanthidae (May Subd Geog) BT Xanthomonas BT Extinct cities—Turkey [QL444.M33] Xanthomonas manihotis (May Subd Geog) Turkey—Antiquities BT Decapoda (Crustacea) [QR82.P78 (Microbiology)] Xanthosia (May Subd Geog) NT Demania BT Xanthomonas [QK495.U48 (Botany)] Menippe Xanthomonas pruni (May Subd Geog) BT Umbelliferae Pilumnus [QR82.P78] Xanthosiderite Xanthine BT Xanthomonas USE Goethite [QD401] Xanthomyza (May Subd Geog) Xanthosoma sagittaefolium UF Dihydropurinedione [QL696.P249] USE Yautia Dioxopurine BT Honeyeaters Xanthotype (May Subd Geog) BT Alloxuric substances NT Regent honeyeater [QL561.G6] Nitrogen excretion Xanthomyza phrygia BT Geometridae Purines USE Regent honeyeater Xanthoxylum Urine—Analysis Xanthonanthus USE Zanthoxylum NT Caffeine USE Vernal grass Xanthus (Extinct city) Methylxanthines Xanthone USE Xanthos (Extinct city) Xanthine oxidase [QD405] Xantusia (May Subd Geog) Xanthine oxidase Xanthonychidae [QL666.L293] [QP603] USE Helminthoglyptidae BT Xantusiidae UF Xanthinoxidase Xanthonycidae NT Xantusia vigilis XO (Enzyme) USE Helminthoglyptidae Xantusia vigilis (May Subd Geog) BT Oxidases Xanthoparmelia (May Subd Geog) [QL666.L293] Xanthine [QK585.P2] BT Xantusia Xanthinoxidase BT Parmeliaceae Xantusiidae (May Subd Geog) USE Xanthine oxidase Xanthophores (May Subd Geog) [QL666.L293 (Zoology)] Xanthite UF Yellow chromatophores UF Night lizards USE Vesuvianite BT Chromatophores BT Lizards Xanthium (May Subd Geog) Xanthophyceae (May Subd Geog) Squamata [QK495.C74] UF Heterochlorida NT Lepidophyma UF Cockleburrs Heterocontae Xantusia Cockleburs Heterokontae Xapacura Indians BT Compositae Tribophyceae USE Uruewawau Indians Xanthocephalus (May Subd Geog) Xanthophyta Xapanã (Afro-Brazilian deity) [QL696.P2475 (Zoology)] Yellow-green algae USE Obaluaiê (Afro-Brazilian deity) BT Blackbirds BT Algae Xaqas language Heterokontophyta USE Khakass language

X-3 Xaracii language Xavier family (Not Subd Geog) Xel-Há Site (Mexico) USE Anesu language Xayá River (Guatemala) USE Xelha Site (Mexico) Xaracuu language UF Chayá River (Guatemala) Xelha Site (Mexico) USE Anesu language Río Chayá (Guatemala) UF Xel-Há Site (Mexico) Xaragure language (May Subd Geog) Río Xayá (Guatemala) BT Mexico—Antiquities [PL6340] BT Rivers—Guatemala Xemaá-el-Fná (Marrakech, Morocco) UF Aragure language [Former heading] XB-19 bomber USE Jāmaʻ al-Fanāʾ (Marrakech, Morocco) Haragure language USE B-19 bomber Xena (Dwarf planet) Thio language XB-19A bomber USE Eris (Dwarf planet) Thyo language USE B-19 bomber Xena, Warrior Princess (Game) BT Melanesian languages XB-44 bomber [GV1469.35.X42] New Caledonia—Languages USE B-50 bomber BT Video games Xarbuxyn Balgas (Extinct city) XB-70 bomber Xena Holmes (Fictitious character) BT Extinct cities—Mongolia USE B-70 bomber USE Holmes, Xena (Fictitious character) Mongolia—Antiquities xB automobile Xenacanthidae (May Subd Geog) Xarifia (May Subd Geog) USE Scion xB automobile BT Xenacanthiformes [QL444.C73] Xbase (Computer program language) NT Xenacanthus BT Xarifiidae BT Programming languages (Electronic Xenacanthiformes (May Subd Geog) Xarifiidae (May Subd Geog) computers) BT Chondrichthyes, Fossil [QL444.C73] XBLR-2 bomber Sharks, Fossil BT Cyclopoida USE B-19 bomber NT Xenacanthidae NT Xarifia Xbox 360 (Video game console) (Not Subd Geog) Xenacanthus (May Subd Geog) Xaroxa (African people) BT Video games—Equipment and supplies UF Hypospondylus USE Didinga (African people) Xbox One (Video game console) (Not Subd Geog) BT Xenacanthidae Xaroxa language BT Video games—Equipment and supplies Xenambassis (May Subd Geog) USE Didinga language Xbox video games (Not Subd Geog) [QL638.C34] Xasa language UF Microsoft Xbox video games BT Centropomidae USE Tigré language BT Video games Xenarthra (May Subd Geog) Xasonke language XBRL (Document markup language) [QL737.E2-QL737.E238] USE Kassonke language [HF5548.5.X25] UF Edentata [Former heading] Xauthii (Asian people) UF eXtensible Business Reporting Language Edentates USE Jat (Asian people) (Document markup language) Xenarthrans Xavante Acuan language BT Document markup languages BT Mammals USE Xavante language XC-142 (Transport plane) NT Armadillos Xavante-Acuen Indians USE C-142 (Transport plane) Bradypodidae USE Xavante Indians XC-142A (Transport plane) Megalonychidae Xavante children (May Subd Geog) USE C-142 (Transport plane) Myrmecophagidae UF Children, Xavante XC ski trails Sloths BT Children—Brazil USE Cross-country ski trails Xenarthra, Fossil (May Subd Geog) Xavante Indians (May Subd Geog) Xcan Cave (Mexico) [QE882.E2] [F2520.1.A4] [F1435.1.X32 (Mayan antiquities)] UF Edentata, Fossil [Former heading] UF Acua Indians UF Gruta de Xcan (Mexico) BT Mammals, Fossil Acua-Shavante Indians Xcan Grotto (Mexico) NT Armadillos, Fossil Acuen-Xavante Indians BT Caves—Mexico Ernanodontidae Akuen Indians Mexico—Antiquities Glyptodontidae Akwa Indians Xcan Grotto (Mexico) Ground sloths Akwe Indians USE Xcan Cave (Mexico) Megalonychidae, Fossil Akwe Shavante Indians [Former heading] Xcaret, Parque (Mexico) Megatheriidae A'we Indians USE Parque Xcaret (Mexico) Mylodontidae Chavante Acuan Indians Xcochkax Site (Mexico) Pampatheriidae Chavante-Akwẽ Indians BT Mexico—Antiquities Sloths, Fossil Chavante Indians Xculoc Site (Mexico) Xenarthrans Crisca Indians [F1435.1.X37] USE Xenarthra Crixá Indians BT Mexico—Antiquities Xenia Smith (Fictitious character) Eochavante Indians Xde (African people) USE Smith, Xenia (Fictitious character) Oti Indians USE Hdi (African people) Xenical (Trademark) Pusciti Indians Xdi language USE Orlistat Puxití Indians USE Hdi language Xenicidae Shavante-Akwẽ Indians Xé Champhon (Laos) USE New Zealand wrens Tapacuá Indians USE Champhon River (Laos) Xenicus (May Subd Geog) Xavante-Acuen Indians XE computers [QL696.P212 (Zoology)] BT Gê Indians USE Atari XE computers BT New Zealand wrens Indians of South America—Brazil Xe Dang (Southeast Asian people) NT Xenicus gilviventris Xavante language (May Subd Geog) USE Sedang (Southeast Asian people) Xenicus gilviventris (May Subd Geog) UF Acua language Xebero Indians [QL696.P212 (Zoology)] Acuan-Shavante language USE Jebero Indians UF Alpine rock wren Akuen language Xebero language Rock wren (Xenicus gilviventris) Akwa language (Brazil) USE Jebero language South Island rock wren Akwe language Xedi (African people) South Island wren Akwẽ Shavante language [Former heading] USE Hdi (African people) BT Xenicus A'we language Xedi language Xenix (Zurich, Switzerland) Chavante Acuan language USE Hdi language USE Kino Xenix (Zurich, Switzerland) Chavante language [Former heading] Xegwe (African people) Xenoberyces Crisca language USE Batwa (African people) USE Beryciformes Eochavante language Xegwi (African people) Xenobiotic compounds Oti language USE Batwa (African people) USE Xenobiotics Puscití language Xekong River Xenobiotic ketone reductase Puxiti language UF Houei Khoang USE Carbonyl reductase Shavante Akwe language Khoang River Xenobiotics Tapacuá language Khong River [QP529] Xavante Acuan language Kong River UF Foreign chemical compounds BT Brazil—Languages Se Khong Foreign compounds Gê languages Sé Kong Xenobiotic compounds — Names Sekong BT Biochemistry USE Names, Xavante Tônlé Kŏng Chemicals Xavante mythology (May Subd Geog) BT Rivers—Cambodia NT Microorganisms—Effect of xenobiotics on UF Mythology, Xavante Rivers—Laos — Physiological effect (May Subd Geog) Xavante names Rivers—Vietnam [QP529] USE Names, Xavante Xekong River Watershed NT Plants—Effect of xenobiotics on Xaverian Brothers BT Watersheds—Cambodia Xenocalamus (May Subd Geog) [BX4190.X3] Watersheds—Laos [QL666.O627] UF Brothers of St. Francis Xavier Watersheds—Vietnam UF Quill-nosed snakes

X-4 Quill-snouted snakes Xenoophorus Xere language BT Atractaspididae [QL638.G82] USE Numèè language Xenocatantops (May Subd Geog) BT Goodeidae Xerente Indians [QL508.A2] Xenopeltidae USE Sherente Indians BT Grasshoppers USE Sunbeam snakes Xereu language Xenochromis Xenoperidae USE Hixkaryana language USE Perissodus eccentricus USE Fellodistomidae Xerewyana language Xenocongridae (May Subd Geog) Xenophobia (May Subd Geog) USE Hixkaryana language [QL638.X45] UF Zenophobia Xerex de Aristeguieta family UF Chilorhinidae BT Phobias USE Jerez de Aristeguieta family Chlopsidae Xenophobia in language (May Subd Geog) Xerez de Aristeguieta family Echelidae BT Language and languages USE Jerez de Aristeguieta family False morays Psycholinguistics Xeric ecology (May Subd Geog) Muraenichthyidae Sociolinguistics [QH101-QH198 (Local)] Myridae Xenophobia in literature (Not Subd Geog) [QH541.5.X45 (General)] BT Eels Xenophobia in mass media (Not Subd Geog) BT Ecology NT Kaupichthys [P96.X45] RT Desert ecology Thalassenchelys BT Mass media Xeric landscaping Xenocyttus nemotoi Xenophobia in motion pictures (Not Subd Geog) USE Xeriscaping USE Smooth oreo BT Motion pictures Xèrica family Xenodexia (May Subd Geog) Xenophora (May Subd Geog) USE Jérica family [QL638.C96] [QL430.5.X46] Xeriscaping (May Subd Geog) BT Cyprinodontidae BT Xenophoridae [SB439.8 (Drought-tolerant plants)] Xenodiagnosis (May Subd Geog) Xenophoridae (May Subd Geog) [SB475.83 (Water conservation)] BT Diagnosis, Laboratory [QL430.5.X46 (Zoology)] UF Waterwise gardening Xenodorella (May Subd Geog) UF Carrier shells Xeric landscaping [QL537.T42] Onustidae BT Landscape gardening—Water conservation BT Tephritidae Phoridae (Mollusks) RT Drought-tolerant plants NT Xenodorella mira Shells, Carrier Xero Island (Greece) Xenodorella mira (May Subd Geog) Xenophorids USE Peristera Island (Greece) [QL537.T42] BT Littorinimorpha Xerobates agassizii BT Xenodorella NT Xenophora USE Desert tortoise Xenogears (Game) Xenophorids Xerobates berlandieri [GV1469.35.X45] USE Xenophoridae USE Texas tortoise BT Video games Xenopithecus Xerocomus versicolor Xenoglossa (May Subd Geog) USE Proconsul (Fossil primates) USE Trametes versicolor [QL568.A53] Xenopneusta (May Subd Geog) Xeroderma pigmentosum (May Subd Geog) UF Gourd bees [QL391.E2] UF Kaposi's disease Squash bees BT Echiura XP (Disease) BT Anthophoridae NT Urechidae BT Photosensitivity disorders Xenoglossy Xenopoclinidae Precancerous conditions [BF1353] USE Clinidae Skin—Abnormalities RT Glossolalia Xenopsylla (May Subd Geog) Xerogels (May Subd Geog) BT Spiritualism [QL599.7.P8] BT Ceramic materials Xenoglyptodon UF Laemopsylla Colloids USE Glyptodon BT Pulicidae Xerographic art Xenografts (May Subd Geog) NT Oriental rat flea USE Copy art [QR188.8] Xenopsylla cheopis Xerography UF Heterografts USE Oriental rat flea BT Electrostatic printing Heterologous transplants Xenopteridae NT Xerox 1075 (Copying machine) Heteroplastic grafts USE Puffers (Fish) — Developing and developers Xenotransplantation Xenopterygii [TR1045] BT Transplantation of organs, tissues, etc. USE Gobiesociformes — Equipment and supplies — Law and legislation (May Subd Geog) Xenopteryx (May Subd Geog) NT Toners (Xerography) BT Medical laws and legislation [QL596.P83] Xeroma Xenoliths BT Feather-wing beetles USE Xerophthalmia USE Igneous rocks—Inclusions NT Xenopteryx setosus Xeronesi Island (Greece) Xenomi Xenopteryx setosus (May Subd Geog) USE Peristera Island (Greece) USE Salmoniformes [QL596.P83] Xeronisi Island (Greece) Xenomorphs (Fictitious characters) (Not Subd Geog) BT Xenopteryx USE Peristera Island (Greece) UF Aliens (Fictitious characters : Xenomorphs) Xenopus (May Subd Geog) Xerophthalmia (May Subd Geog) Xenon (May Subd Geog) [QL668.E265] UF Conjunctivitis arida [QD181.X4 (General and inorganic chemistry)] UF African clawed frog Eye—Xerosis [Former heading] [QD412.X4 (Organometallic chemistry)] Dactylethra Ophthalmoxerosis [TP245.X4 (Chemical technology)] Silurana Xeroma BT Gases, Rare BT Pipidae Xerophthalmus — Isotopes (May Subd Geog) NT Xenopus laevis Xerosis of the eye [QD181.X4] Xenopus laevis (May Subd Geog) BT Conjunctiva—Diseases BT Fission gases [QL668.E265] Dry eye syndromes — — Decay UF Dactylethra laevis Vitamin A deficiency — — Spectra South African clawed frog Xerophthalmus — Spectra BT Xenopus USE Xerophthalmia — Thermal properties (May Subd Geog) Xenorhabdus (May Subd Geog) Xerophyllaceae Xenon compounds (May Subd Geog) [QR82.E6] USE Melanthiaceae [QD181.X4 (General and inorganic chemistry)] BT Enterobacteriaceae Xerophyllum (Plants) (May Subd Geog) [QD412.X4 (Organometallic chemistry)] Xenosauridae (May Subd Geog) [QK495.M5135 (Botany)] [TP245.X4 (Chemical technology)] [QL666.L295 (Zoology)] UF Beargrass BT Rare gas compounds BT Lizards Beargrasses NT Xenon hexafluoride Squamata BT Melanthiaceae Xenon hexafluoride (May Subd Geog) NT Xenosaurus NT Xerophyllum tenax BT Rare gas fluorides Xenosaurus (May Subd Geog) Xerophyllum douglasii Xenon compounds [QL666.L295] USE Xerophyllum tenax Xenon lamps BT Xenosauridae Xerophyllum tenax (May Subd Geog) UF Electric lamps, Xenon Xenotime (May Subd Geog) [QK495.M5135 (Botany)] Lamps, Xenon BT Phosphate minerals UF Basket grass, Indian BT Electric discharge lighting Xenotime (Imaginary place) (Not Subd Geog) Bear-lily Electric lamps UF Town of Gold (Imaginary place) Common beargrass — Power supply (May Subd Geog) BT Imaginary places Elk grass Xenonectria Xenotis Fire-lily USE Herpotrichia USE Lepomis Helonias tenax Xenotransplantation Indian basket grass USE Xenografts Quip-quip

X-5 Xerophyllum tenax (Continued) Xhosa (African people) (May Subd Geog) Xhosa popular plant names Soap grass [DT1768.X57 (Africa)] USE Plant names, Popular—Xhosa Squaw grass [DS489.25.X56 (Sri Lanka)] Xhosa pottery Turkey-beard, Western UF Amaxosa (African people) USE Pottery, Xhosa Western turkey-beard Kāpiri (African people) Xhosa protest poetry Xerophyllum douglasii Koosa (African people) USE Protest poetry, Xhosa BT Xerophyllum (Plants) Xosa [Former heading] Xhosa proverbs Xerophytes (May Subd Geog) Xosa (African people) USE Proverbs, Xhosa [QK922] BT Ethnology—South Africa Xhosa radio plays BT Plants Ethnology—Sri Lanka USE Radio plays, Xhosa RT Arid regions plants Nguni (African people) Xhosa short stories Drought-tolerant plants NT Ndlambe (African people) USE Short stories, Xhosa Succulent plants — Folklore Xhosa songs NT Xerothermic plants NT Ukuthwetyulwa USE Songs, Xhosa — Anatomy — Missions (May Subd Geog) Xhosa Wars, South Africa, 1811-1878 Xeropolis (Extinct city) [BV3630.X65] USE South Africa—History—Frontier Wars, 1811- BT Extinct cities—Greece UF Missions to Xhosa (African people) 1878 Greece—Antiquities [Former heading] XHTML (Document markup language) Xeroradiography (May Subd Geog) Missions to Xosa [Former heading] UF eXtensible HyperText Markup Language BT Radiography Xhosa authors (Document markup language) Xerosis of the eye USE Authors, Xhosa BT Document markup languages USE Xerophthalmia Xhosa beadwork Xi family (Not Subd Geog) Xerospermophilus USE Beadwork, Xhosa UF Hsi family USE Pygmy ground squirrels Xhosa Bible stories Xi He (China) Xerospermophilus mohavensis USE Bible stories, Xhosa USE Xi River (China) USE Mohave ground squirrel Xhosa Cattle-Killing, South Africa, 1856-1857 Xi Hu (China) Xerospermophilus tereticaudus USE South Africa—History—Xhosa Cattle-Killing, USE West Lake (China) USE Round-tailed ground squirrel 1856-1857 Xi hui guan (Luoyang Shi, China) Xerotaceae Xhosa children USE Shan Shan hui guan (Luoyang Shi, China) USE Asparagaceae USE Children, Xhosa Xi Jiang (China) Xerotes Xhosa children's songs USE Xi River (China) USE Lomandra USE Children's songs, Xhosa Xi ling (China) Xerothermic plants (May Subd Geog) Xhosa drama (May Subd Geog) USE Western Qing Tombs (China) [QK108-QK474.5 (Local)] BT Xhosa literature Xi Mountain (China) [QK922 (General)] NT Folk drama, Xhosa USE Western Hills (Beijing, China) BT Xerophytes Radio plays, Xhosa Xi Mountain (Guiping Shi, China) Xerox 860 (Word processor) (Not Subd Geog) Xhosa essays (May Subd Geog) This heading is not valid for use as a geographic [Z52.5.X47] Here are entered collections of essays by several subdivision. BT Word processors authors. UF Siling Shan (China) Xerox 1075 (Copying machine) (Not Subd Geog) BT Xhosa literature West Mountain (China) BT Photocopying machines Xhosa fiction (May Subd Geog) Xi Shan (Guiping Shi, China) Xerography UF Xosa fiction [Former heading] BT Mountains—China Xeroxing (Trademark) BT Xhosa literature Xi Mountains (China) USE Photocopying NT Short stories, Xhosa USE Western Hills (Beijing, China) Xers Xhosa folk drama Xi qin USE Generation X USE Folk drama, Xhosa USE Ban hu XES (X-ray emission spectroscopy) Xhosa folk poetry Xi River (China) USE X-ray spectroscopy USE Folk poetry, Xhosa UF Hsi Chiang (China) Xestia (May Subd Geog) Xhosa folk songs Hsi-chih Chiang (China) [QL561.N7 (Zoology)] USE Folk songs, Xhosa Sai Kong (China) BT Cutworms Xhosa geographical names Si Chiang (China) Noctuidae USE Names, Geographical—Xhosa Si He (China) NT Spotted cutworm Xhosa hymns Si Kiang (China) Xestia adela USE Hymns, Xhosa Sui Kiang (China) USE Spotted cutworm Xhosa imprints (May Subd Geog) West River (China) Xestia c-nigrum Xhosa language (May Subd Geog) Xi He (China) USE Spotted cutworm [PL8795] Xi Jiang (China) Xestidae UF isiXhosa language BT Rivers—China USE Helicarionidae Kaffer language Xi Shan (Beijing, China) Xestobium (May Subd Geog) Kaffir language USE Western Hills (Beijing, China) [QL596.A5] Kafir language Xi Shan (Guiping Shi, China) BT Anobiidae Xosa language [Former heading] USE Xi Mountain (Guiping Shi, China) NT Xestobium rufovillosum BT Nguni languages Xi Tong Gaosu Gonglu (China) Xestobium rufovillosum (May Subd Geog) South Africa—Languages UF Shaanxi Xi Tong Gaosu Gonglu (China) [QL596.A5] NT Hlonipha Shaanxi Xi Tong Highway (China) UF Anobium tessellatum — Names Shan he bai li Xi Tong Lu (China) Death watch beetle USE Names, Xhosa Shanhe Baili XiTong Lu (China) Xestobium tessellatum — Tone BT Express highways—China BT Xestobium BT Tone (Phonetics) Xi Wang Mu (Taoist deity) (Not Subd Geog) Xestobium tessellatum Xhosa laudatory poetry [BL1942.85.X58] USE Xestobium rufovillosum USE Laudatory poetry, Xhosa UF Hsi Wang Mu (Taoist deity) [Former heading] Xetá Indians Xhosa law Queen Mother of the West (Taoist deity) USE Héta Indians USE Law, Xhosa BT Taoist goddesses Xetulul (Guatemala) Xhosa literature (May Subd Geog) Xi Xia dynasty, 1038-1227 BT Amusement parks—Guatemala UF Xosa literature [Former heading] USE China—History—Xi Xia dynasty, 1038-1227 Xevero Indians BT South African literature Xi xia language USE Jebero Indians NT Xhosa drama USE Tangut language Xevero language Xhosa essays Xi yuan (Beijing, China) USE Jebero language Xhosa fiction USE Zhongnan hai (Beijing, China) Xevsurebi Xhosa poetry Xi zang gong bu zi ran bao hu qu (China) USE Khevsurs Xhosa lullabies USE Xizang Gongbu Ziran Baohuqu (China) XF-12 (Reconnaissance aircraft) USE Lullabies, Xhosa Xi zang Region USE Republic XR-12 (Reconnaissance aircraft) Xhosa names USE Tibet Region XF8-B1 (Fighter plane) USE Names, Xhosa Xia family (Not Subd Geog) USE Boeing XF8B-1 (Fighter plane) Xhosa personal names UF Hsia family XF8B-1 (Fighter plane) USE Names, Personal—Xhosa Xia zi xi USE Boeing XF8B-1 (Fighter plane) Xhosa poetry (May Subd Geog) USE Lian hua lao Xhaaidlagha Gwaayaai (B.C.) BT Xhosa literature Xiajiadian culture, Lower USE Haida Gwaii (B.C.) NT Folk poetry, Xhosa USE Lower Xiajiadian culture Xhac Site (Mexico) Laudatory poetry, Xhosa Xiajiadian culture, Upper USE Xoc Site (Mexico) Protest poetry, Xhosa USE Upper Xiajiadian culture

X-6 Xiamen dialect subdivision. Xiao River (China) USE Hokkien dialects UF Xiamen Xiang'an Haidi Suidao (Xiamen Shi, USE Xiao River (Hebei Sheng, China) Xiamen Xiang'an Haidi Suidao (Xiamen Shi, China) China) Xiao River (Hebei Sheng, China) USE Xiang'an Suidao (Xiamen Shi, China) Xiamen Xiang'an Tunnel (Xiamen Shi, China) UF Ching-hsing Shui (China) Xiamen Xiang'an Tunnel (Xiamen Shi, China) Xiang'an Haidi Suidao (Xiamen Shi, China) Hsiao Ho (Hebei Sheng, China) USE Xiang'an Suidao (Xiamen Shi, China) BT Underwater tunnels—China Hsiao River (China) [Former heading] Xi'an Incident, Xi'an, China, 1936 Xiang'an Yunhe (China) Jingxing Shui (China) USE China—History—Xi'an Incident, 1936 USE Ling Canal (China) Lu-chʻüan Shui (China) Xian tian dao (Cult) (May Subd Geog) Xianggang Dao (China) Luquan Shui (China) [BL1943.H74] USE Hong Kong Island (China) Sixiao Shui (China) UF Hsien tʻien tao (Cult) [Former heading] Xianggang li bin fu (Hong Kong, China) Ssu-hsiao Shui (China) Way of Former Heaven (Cult) USE Hong Kong Government House (Hong Kong, Tong Shui (Hebei Sheng, China) BT Cults—China China) Tʻung Shui (Hebei Sheng, China) Xi'an Xiao yan ta (Xi'an Shi, China) Xianggang shou yu Xiao River (China) [Former heading] USE Xiao yan ta (Xi'an Shi, China) USE Hong Kong Sign Language Xiao He (Hebei Sheng, China) Xian ze Xianggang Zhan (Hong Kong Island, China) BT Rivers—China USE San xian UF Hong Kong Station (Hong Kong Island, China) Xiao Shangdi (Chinese deity) Xianbei (Asian people) (May Subd Geog) BT Railroad stations—China USE Xuantian Shangdi (Chinese deity) [DS328.4.X53] Xianggui Yunhe (China) Xiao wan liu tang Collection (Kōbe-shi, Japan) UF Hsien-pei (Asian people) USE Ling Canal (China) BT Painting—Private collections—Japan Hsien-pi (Asian people) Xiangqi (Game) Xiao Xing'an Ling (China) Xianbi (Asian people) USE Chinese chess USE Lesser Khingan Range (China) BT Ethnology—Asia Xiangquan He Xiao yan ta (Xi'an Shi, China) Xianbi (Asian people) USE Sutlej River UF Xi'an Xiao yan ta (Xi'an Shi, China) USE Xianbei (Asian people) Xiangshan (Jiangxi Sheng, China : Mountain) BT Pagodas—China Xiandao language (May Subd Geog) USE Xiang Mountain (Jiangxi Sheng, China) Xiaojiang River (Yunnan Sheng, China) [PL3311.X53] Xiangshan Bay (China) USE Xiao Jiang River (Yunnan Sheng, China) BT China—Languages UF Hsiang-shan Bay (China) Xiaojin Shan (China : Mountain) Tibeto-Burman languages Nimrod Bay (China) USE Tongjun Mountain (China) Xiang dialects (May Subd Geog) Siang-shan Bay (China) Xiaolangdi Reservoir (China) [PL1861-PL1870] Siangshan Bay (China) UF Hsiao-lang-ti Reservoir (China) [Former UF Hsiang dialects [Former heading] Xiangshan Gang (China) heading] Hunan dialects BT Bays—China Hsiao-lang-ti shui kʻu (China) Hunanese dialects Harbors—China Xiaolangdi Shuiku (China) BT China—Languages Xiangshan Gang (China) BT Reservoirs—China Chinese language USE Xiangshan Bay (China) Xiaolangdi Shuiku (China) Xiang family (Not Subd Geog) Xiangsheng USE Xiaolangdi Reservoir (China) Xiang Jiang (Guangxi Zhuangzu Zizhiqu and Hunan USE Xiang sheng Xiaolongmen Guojia Senlin Gongyuan (Beijing, China) Sheng, China) Xiangtangshan Caves (China) This heading is not valid for use as a geographic USE Xiang River (Guangxi Zhuangzu Zizhiqu and UF Xiangtangshan Grottoes (China) subdivision. Hunan Sheng, China) Xiangtangshan Shiku (China) UF Xiaolongmen National Forest Park (Beijing, Xiang Lake (China) BT Buddhist cave temples—China China) UF Hsiang Lake (China) [Former heading] Caves—China Xiaolongmen Senlin Gongyuan (Beijing, China) BT Lakes—China Xiangtangshan Grottoes (China) BT Forest reserves—China Reservoirs—China USE Xiangtangshan Caves (China) National parks and reserves—China Xiang Mountain (Jiangxi Sheng, China) Xiangtangshan Shiku (China) Xiaolongmen National Forest Park (Beijing, China) UF Xiang Shan (Jiangxi Sheng, China : Mountain) USE Xiangtangshan Caves (China) USE Xiaolongmen Guojia Senlin Gongyuan (Beijing, Xiangshan (Jiangxi Sheng, China : Mountain) Xianqu He (China) China) BT Mountains—China USE Xianshui River (China) Xiaolongmen Senlin Gongyuan (Beijing, China) Xiang River (China) Xianqu River (China) USE Xiaolongmen Guojia Senlin Gongyuan (Beijing, USE Xiang River (Guangxi Zhuangzu Zizhiqu and USE Xianshui River (China) China) Hunan Sheng, China) Xianshui He (China) Xiaoping Dao (China) Xiang River (Guangxi Zhuangzu Zizhiqu and Hunan USE Xianshui River (China) USE Xiaoping Island (China) Sheng, China) Xianshui River (China) Xiaoping Island (China) UF Hsiang Chiang (Guangxi Zhuangzu Zizhiqu UF Hsien-chʻü Ho (China) UF Heito Tau (China) and Hunan Sheng, China) Hsien-chʻü River (China) Hsiao-pʻing Island (China) [Former heading] Hsiang River (China) [Former heading] Hsien-shui Ho (China) Hsiao-pʻing tao (China) Siang Kiang (China) Hsien-shui River (China) [Former heading] Hsio-pʻing-tao (China) Siang River (China) Xianqu He (China) Kohirazima (China) Xiang Jiang (Guangxi Zhuangzu Zizhiqu and Xianqu River (China) Pʻing-tʻou Tao (China) Hunan Sheng, China) Xianshui He (China) Ping tu Tau (China) Xiang River (China) [Former heading] BT Rivers—China Pingtou Dao (China) BT Rivers—China Xianzi Sho-hai-tao (China) Xiang River Valley (China) USE San xian Shohei Tao (China) USE Xiang River Valley (Guangxi Zhuangzu Zizhiqu Xiao (May Subd Geog) Siaopingtao (China) and Hunan Sheng, China) [ML990.X53 (History)] Xiaoping Dao (China) Xiang River Valley (Guangxi Zhuangzu Zizhiqu and [MT358.X53 (Instruction)] BT Islands—China Hunan Sheng, China) UF Hsiao [Former heading] Xiaoqing He (Shandong Sheng, China) UF Hsiang River Valley (China) [Former heading] BT Flute USE Xiaoqing River (Shandong Sheng, China) Xiang River Valley (China) [Former heading] Musical instruments—China Xiaoqing River (China) Xiang Valley (Guangxi Zhuangzu Zizhiqu and Xiao and qin music (May Subd Geog) USE Xiaoqing River (Shandong Sheng, China) Hunan Sheng, China) [M296-M297] Xiaoqing River (Shandong Sheng, China) BT Valleys—China UF Qin and xiao music UF Hsiao-chʻing River (China) [Former heading] Xiang Shan (Jiangxi Sheng, China : Mountain) Xiao family (Not Subd Geog) Siaoching River (Shandong Sheng, China) USE Xiang Mountain (Jiangxi Sheng, China) UF Hsiao family [Former heading] Siaotsing River (Shandong Sheng, China) Xiang sheng (May Subd Geog) Xiao He (Hebei Sheng, China) Xiaoqing He (Shandong Sheng, China) [PL2368.H75 (History)] USE Xiao River (Hebei Sheng, China) Xiaoqing River (China) [Former heading] [PL2579.H8 (Collections)] Xiao Hinggan Ling (China) Zi River (Shandong Sheng, China) [PN2874.5.H75 (Theater)] USE Lesser Khingan Range (China) BT Rivers—China UF Hsiang sheng [Former heading] Xiao Jiang River (Yunnan Sheng, China) Xiaosaurus (May Subd Geog) Xiangsheng UF Hsiao Chiang River (Yunnan Sheng, China) [QE862.O65] BT Chinese drama (Comedy) Xiaojiang River (Yunnan Sheng, China) BT Ornithischia Chinese wit and humor BT Rivers—China Xiaotao Ma (Fictitious character) Theater—China Xiao Ling Shan (China) USE Ma, Mo Shen (Fictitious character) Xiang Valley (Guangxi Zhuangzu Zizhiqu and Hunan USE Lesser Ling Mountain (China) Xiaowutai Mountains (China) Sheng, China) Xiao music (May Subd Geog) UF Hsiao-wu-tʻai Mountains (China) [Former USE Xiang River Valley (Guangxi Zhuangzu Zizhiqu [M110.X] heading] and Hunan Sheng, China) Here are entered compositions not in a specific Hsiao-wu-tʻai shan (China) Xiang'an Haidi Suidao (Xiamen Shi, China) form or of a specific type for solo xiao, and collections Xiaowutai Shan (China) of compositions in several forms or types for solo BT Mountains—China USE Xiang'an Suidao (Xiamen Shi, China) xiao. Xiang'an Suidao (Xiamen Shi, China) Xiaowutai Shan (China) UF Hsiao music [Former heading] This heading is not valid for use as a geographic USE Xiaowutai Mountains (China)

X-7 Xiaoxing'anling (China) — Missions (May Subd Geog) Extinct languages USE Lesser Khingan Range (China) Xila (Asian people) Guatemala—Languages Xiatongren Lu Site (China) USE Si La (Asian people) Xincan language USE Xiatongren Road Site (China) Ximenia aegyptiaca USE Xinca language Xiatongren Road Site (China) USE Balanites aegyptiacus Xindili Site (Wanli Cun, China) UF Xiatongren Lu Site (China) Ximeniaceae This heading is not valid for use as a geographic BT China—Antiquities USE Olacaceae subdivision. Xibba (African people) Ximšiašvili family (Not Subd Geog) BT China—Antiquities USE Kilba (African people) UF Khimshiashvil family Xing hua Bay (China) Xibitaoan language Xin (The Chinese word) USE Xinghua Bay (China) USE Cocama language [PL1315.X56] Xing hua Wan (China) Xicaque Indians BT Chinese language—Etymology USE Xinghua Bay (China) USE Jicaque Indians Xin’anjiang Shuiku (China) Xing qing gong (Xi'an Shi, China) Xicaque language USE Qiandao Lake (China) UF Xing Qing Palace (Xi'an Shi, China) USE Jicaque language Xin family (Not Subd Geog) Xingqing Palace (Xi'an Shi, China) Xichang Basin (China) Xin Gang Gang Qiao (Dalian, Liaoning Sheng, China) BT Palaces—China UF Xichang Pendi (China) USE Xin Gang Gang Zhan Qiao (Dalian, Liaoning Xing Qing Palace (Xi'an Shi, China) Xichangpendi (China) Sheng, China) USE Xing qing gong (Xi'an Shi, China) BT Basins (Geology)—China Xin Gang Gang Zhan Bridge (Dalian, Liaoning Sheng, Xing style writing of Chinese Xichang Pendi (China) China) USE Chinese language—Writing—Xing style USE Xichang Basin (China) USE Xin Gang Gang Zhan Qiao (Dalian, Liaoning Xingcheng Site (China) Xichangana language Sheng, China) BT China—Antiquities USE Tsonga language Xin Gang Gang Zhan Qiao (Dalian, Liaoning Sheng, Xinghua Bay (China) Xichangpendi (China) China) UF Hinghwa Sound (China) USE Xichang Basin (China) This heading is not valid for use as a geographic Hingwa Sound (China) Xichun (Fictitious character : An) (Not Subd Geog) subdivision. Hsing-hua Wan (China) Xida (Asian people) UF Hsin kang kang chan Bridge (Dalian, Liaoning Hunghwa Bay (China) USE Si La (Asian people) Sheng, China) Hunghwa Sound (China) Xie family (Not Subd Geog) Hsin kang kang chan chʻiao (Dalian, Liaoning Singhua Wan (China) UF Hsieh family [Former heading] Sheng, China) [Former heading] Singhwa Wan (China) Xie qu yuan (Yihe Yuan, Beijing, China) Hsin kang kang chan chʻiao (Darien, China) Xing hua Bay (China) USE Xiequ Yuan (Yihe Yuan, Beijing, China) [Former heading] Xing hua Wan (China) Xie zhi Hsin kang kang chʻiao (Dalian, Liaoning Sheng, Xinghua Wan (China) USE Xiezhi China) BT Bays—China Xiequ Yuan (Yihe Yuan, Beijing, China) Xin Gang Gang Qiao (Dalian, Liaoning Sheng, Xinghua Wan (China) This heading is not valid for use as a geographic China) USE Xinghua Bay (China) subdivision. Xin Gang Gang Zhan Bridge (Dalian, Liaoning Xingkai Hu (China and Russia) UF Garden of Harmonious Interests (Yihe Yuan, Sheng, China) USE Khanka, Lake (China and Russia) Beijing, China) BT Bridges—China Xinglongwa culture (May Subd Geog) Garden of Harmonious Pleasures (Yihe Yuan, Xin Jinling hua pai BT Neolithic period—China Beijing, China) USE New Jinling school of painting Xingqing Palace (Xi'an Shi, China) Harmonious Interests, Garden of (Yihe Yuan, Xin Jinling painting school USE Xing qing gong (Xi'an Shi, China) Beijing, China) USE New Jinling school of painting Xingshu style writing of Chinese Harmonious Pleasures, Garden of (Yihe Yuan, Xin Loudong hua pai USE Chinese language—Writing—Xing style Beijing, China) USE New Loudong school of landscape painting Xingu National Park (Brazil) Huishan Garden (Yihe Yuan, Beijing, China) Xin Tai Coal Field (China) USE Parque Nacional do Xingu (Brazil) Huishan Yuan (Yihe Yuan, Beijing, China) USE Xin Tai Coalfield (China) Xingu River (Brazil) Xie qu yuan (Yihe Yuan, Beijing, China) Xin Tai Coalfield (China) UF Rio Xingu (Brazil) Xiequyuan (Yihe Yuan, Beijing, China) UF Hsin Tʻai Coal Field (China) [Former heading] BT Rivers—Brazil BT Gardens—China Hsin Tʻai tʻan tʻien (China) Xingu River Valley (Brazil) Yihe Yuan (Beijing, China) Xin Tai Coal Field (China) [Former heading] UF Xingu Valley (Brazil) Xiequyuan (Yihe Yuan, Beijing, China) Xin Tai Tantian (China) BT Valleys—Brazil USE Xiequ Yuan (Yihe Yuan, Beijing, China) BT Coalfields—China Xingu River Watershed (Brazil) Xiezhi (May Subd Geog) Xin Tai Tantian (China) BT Watersheds—Brazil UF Haechi USE Xin Tai Coalfield (China) Xingu Valley (Brazil) Haetae Xinalug language USE Xingu River Valley (Brazil) Haitai USE Khinalugh language Xingyun Hu (China) Jiezhì Xin'an hua pai (Group of painters) USE Xingyun Lake (China) Justice animal USE Anhui school of landscape painting Xingyun Lake (China) Kaichi Xin'an Jiang (China : River) UF Chiang-Ch'uan Hai (China) Shenyang USE Xin'an River (China) Hsing-yün Hu (China) Shin'yō Xin'an pai (Group of painters) Jiangchuan Hu (China) Unicorn-lion USE Anhui school of landscape painting Xingyun Hu (China) Xie zhi Xin'an Quan (China) Xingyunhu (China) Zhi (Mythical animal) USE Xin'an Spring (China) BT Lakes—China BT Animals, Mythical Xin'an River (China) Xingyunhu (China) Mythology, East Asian UF Hsin-an Chiang (China : River) USE Xingyun Lake (China) Xigexing Temple Ruins (China) Hui-chiang (China) Xinh Mul language USE Shikchin Temple Ruins (China) Sinan Kiang (China) USE Puộc language Xihu Gongyuan (Chaozhou Shi, China) Xin'an Jiang (China : River) Xinh Mun (Vietnamese people) (May Subd Geog) This heading is not valid for use as a geographic BT Rivers—China [DS556.45.X56] subdivision. Xin'an Spring (China) UF Con Pua (Vietnamese people) UF West Lake Park (Chaozhou Shi, China) UF Xin'an Quan (China) K'sing Mul (Vietnamese people) BT Parks—China BT Springs—China Pụa (Vietnamese people) Xihu Shan (China) Xinantecatl (Mexico) Puộc (Vietnamese people) USE Hu Mountain (Guangdong Sheng, China) USE Nevado de Toluca Volcano (Mexico) BT Ethnology—Vietnam Xihuila language Xinca cosmology (Not Subd Geog) Xinjiang Basin (China) USE Jebero language UF Cosmology, Xinca UF Xinjiang Pendi (China) Xiin Finiin (Horse) BT Cosmology BT Basins (Geology)—China USE Hiin Finiin (Horse) Xinca Indians (May Subd Geog) Xinjiang cooking Xikeqin Temple Ruins (China) [F1434.3.X4] USE Cooking, Uighur USE Shikchin Temple Ruins (China) BT Indians of Central America—Guatemala Xinjiang Luobupo Yeluotuo Guojiaji Ziran Baohuqu Xikrin cosmology (Not Subd Geog) Xinca language (May Subd Geog) (China) UF Cosmology, Xikrin [PM4498.X3-PM4498.X34] USE Lop Nur Ziran Baohuqu (China) BT Cosmology UF Ikomagi language Xinjiang Pendi (China) Xikrin Indians (May Subd Geog) Jinca language USE Xinjiang Basin (China) [F2520.1.X5] Shinca language Xinjie (China) UF Diore Indians Sinca language USE New Territories (China) Djore-Xikrin Indians Szinca language Xinka language Xukru Indians Xincan language USE Xinca language BT Cayapo Indians Xinka language Xinoxultún Site (Guatemala) Indians of South America—Brazil BT Chibchan languages USE Zotz Site (Guatemala)

X-8 Xinqing Baitouhe Guojiaji Ziran Baohuqu (China) Xiphophorus jalapae Xiu family (Not Subd Geog) UF Heilongjiang Xinqing Baitouhe Guojiaji Ziran USE Xiphophorus helleri UF Tutul Xiu family Baohuqu (China) Xiphophorus maculatus (May Subd Geog) Xiu River (China) Heilongjiang Xinqing Baitouhe Ziran Baohuqu [QL638.P73 (Zoology)] UF Siao Ho (China) (China) [SF458.X58 (Aquarium fishes)] Siao River (China) Heilongjiang Xinqing Hooded Crane National UF Moonfish Xiu Shui (China) Nature Reserve (China) Platy [Former heading] BT Rivers—China Heilongjiang Xinqing Hooded Crane Nature Platypoecilus maculatus [Former heading] Xiu River Watershed (China) Reserve (China) Poecilia maculata BT Watersheds—China BT Bird refuges—China Southern platyfish Xiu Shui (China) National parks and reserves—China BT Platies USE Xiu River (China) Xi'oi Indians Xiphophorus Xiushui He (China) USE Pame Indians Xiphophorus rachovi USE Xiushui River (China) Xi'oi language USE Xiphophorus helleri Xiushui River (China) USE Pame language Xiphophorus strigatus UF Hsiu-shui Ho (China) Xiong family (Not Subd Geog) USE Xiphophorus helleri Hsiu-shui River (China) [Former heading] Xiongnu Xiphorhynchus (May Subd Geog) Xiushui He (China) USE Xiongnu (Asian people) [QL696.P24] BT Rivers—China Xiongnu (Asian people) (May Subd Geog) BT Dendrocolaptidae Xiushui River Watershed (China) [DS328.4.X56] Xiphosura (May Subd Geog) UF Hsiu-shui River Watershed (China) [Former UF Hsiung-nu [Former heading] [QL447.7] heading] Xiongnu [Former heading] BT Merostomata BT Watersheds—China BT Ethnology—Asia NT Limulidae Xivaro Indians Huns Xiphosurus USE Shuar Indians Xipe Totec (Aztec deity) (Not Subd Geog) USE Limulus Xivaro language UF Flayed God (Aztec deity) Xiphydriidae (May Subd Geog) USE Shuar language BT Aztec gods [QL568.X5] Xive (Chinese people) Xiphasiidae UF Wood wasps USE Sibo (Chinese people) USE Blenniidae BT Hymenoptera Xive language Xiphias (May Subd Geog) Xiqiao Mountain (China) USE Sibo language [QL638.X5 (Zoology)] UF Hsi-chʻiao Mountains (China) [Former heading] Xixabangma Feng (China) BT Xiphiidae Xiqiao Mountains (China) [Former heading] USE Xixabangma Peak (China) NT Swordfish Xiqiao Shan (China) Xixabangma Peak (China) Xiphias gladius BT Mountains—China UF Gosainthan (China) USE Swordfish Xiqiao Mountains (China) Gosaithan (China) Xiphidae USE Xiqiao Mountain (China) Hsi-hsia-pang-ma feng (China) USE Beaked whales Xiqiao Shan (China) Hsi-hsia-pang-ma Peak (China) [Former Xiphiidae (May Subd Geog) USE Xiqiao Mountain (China) heading] [QL638.X5 (Zoology)] Xiriana Indians Kao-seng-tsan feng (China) BT Perciformes USE Shiriana Indians Mount Xixia Bangma (China) NT Xiphias Xirima (African people) Shisha Pangma (China) Xiphinema USE Makhuwa-Shirima (African people) Shishapangma Peak (China) USE Dagger nematodes Xirima language Sisha Pangma (China) Xiphisternum USE Makhuwa-Shirima language Xixabangma Feng (China) USE Xiphoid process Xirimía (Musical instrument) Xixia Bangma Mount (China) Xiphiurus USE Chirimía (Musical instrument) Xixiabangma Feng (China) USE Genypterus Xirixana Indians Xixiabangma Peak (China) [Former heading] Xiphius USE Shiriana Indians BT Mountains—China USE Ziphius Xironga language Himalaya Mountains Xiphoid process USE Ronga language Xixia Bangma Mount (China) UF Ensiform process XIS (Information retrieval system) USE Xixabangma Peak (China) Xiphisternum UF Export Information System (Information Xixia dynasty, 1038-1227 BT Cartilage retrieval system) USE China—History—Xi Xia dynasty, 1038-1227 Sternum BT Information storage and retrieval Xixia language Xipholena (May Subd Geog) systems—Export marketing USE Tangut language [QL696.P289 (Zoology)] Xisha Islands Xixiabangma Feng (China) BT Tyrannidae USE Paracel Islands USE Xixabangma Peak (China) NT White-winged cotinga Xisha Qundao Xixiabangma Peak (China) Xipholena atropurpurea USE Paracel Islands USE Xixabangma Peak (China) USE White-winged cotinga Xishan diao hua lou (Tangli Cun, China) Xizang Gaoyuan Xiphopelta UF Xishan Diaohua Ancient Building (Tangli Cun, USE Tibet, Plateau of USE Pachycondyla China) Xizang Gongbu Ziran Baohuqu (China) Xiphopeneus (May Subd Geog) BT Dwellings—China UF Gongbo Nature Reserve (China) [QL444.M33] Xishan Diaohua Ancient Building (Tangli Cun, China) Xi zang gong bu zi ran bao hu qu (China) BT Penaeidae USE Xishan diao hua lou (Tangli Cun, China) BT National parks and reserves—China Xiphopeneus kroyeri Xishuangbanna Dai (Asian people) Natural areas—China USE Seabob USE Lü (Asian people) Xizang Region Xiphophorus (May Subd Geog) Xishuangbanna Nature Reserve (China) USE Tibet Region [QL638.P73 (Zoology)] USE Xishuangbanna Ziran Baohuqu (China) XJ6 automobile [SF458.X58 (Aquarium fishes)] Xishuangbanna Ziran Baohuqu (China) USE Jaguar XJ6 automobile UF Platypoecilus UF Hsi-shuang-pan-na tzu jan pao hu chʻü (China) XJ40 automobile BT Poeciliidae [Former heading] USE Jaguar XJ40 automobile NT Platies Xishuangbanna Nature Reserve (China) Xkichmook Site (Mexico) Swordtails (Fish) BT National parks and reserves—China BT Mexico—Antiquities Xiphophorus helleri Natural areas—China Xkipché Site (Mexico) Xiphophorus maculatus XIT Ranch (Tex.) BT Mexico—Antiquities Xiphophorus brevia BT Ranches—Texas XL computers USE Xiphophorus helleri Xitshwa language USE Atari XL computers Xiphophorus guentheri USE Tswa language Xlapak Site (Mexico) USE Xiphophorus helleri Xitsonga language UF Lapak Site (Mexico) Xiphophorus helleri (May Subd Geog) USE Tsonga language BT Mexico—Antiquities [QL638.P73 (Zoology)] Xitswa language XLISP (Computer program language) [SF458.X58 (Aquarium fishes)] USE Tswa language [QA76.73.X] UF Green swordtail Xituan Shan culture (May Subd Geog) BT Programming languages (Electronic Helleri [GN776.3.X58] computers) Xiphophorus brevia UF Hsi-tʻuan shan culture [Former heading] XLMR (Disease) Xiphophorus guentheri Xituanshan culture USE X-linked mental retardation Xiphophorus jalapae BT China—Antiquities XLNET (Local area network system) Xiphophorus rachovi Neolithic period—China BT Local area networks (Computer networks) Xiphophorus strigatus Xituanshan culture XM1 (Tank) BT Swordtails (Fish) USE Xituan Shan culture USE M1 (Tank) Xiphophorus

X-9 Xmas Xolota language Xtemass USE Christmas USE Choroti language USE Christmas XML (Document markup language) Xolotlán Lake (Nicaragua) Xterra sport utility vehicle (Not Subd Geog) [QA76.76.H94 (Computer science)] USE Managua, Lake (Nicaragua) UF Nissan Xterra sport utility vehicle [Z678.93.X54 (Library automation)] !Xong language (Botswana and Namibia) BT Nissan trucks UF Extendible Markup Language (Document USE !Xõ language Sport utility vehicles markup language) Xong language (Cambodia and Thailand) Xtiêng (Southeast Asian people) eXtensible Markup Language (Document USE Chong language USE Stieng (Southeast Asian people) markup language) Xonxon'ata Site (Calif.) XTP (Computer network protocol) BT Document markup languages USE Jonjonata Site (Calif.) USE Xpress Transfer Protocol (Computer network XML-based User Interface Language (Document Xóõ language protocol) markup language) USE !Xõ language !Xũ (African people) USE XUL (Document markup language) Xoom (Computer) (Not Subd Geog) USE !Kung (African people) XML query language (Computer program language) UF Motorola Xoom (Computer) !Xũ (!Kung) language USE XQuery (Computer program language) BT Motorola computers USE Ju/'hoan language Xne Nal Mewx Indians Tablet computers Xu family USE Snuneymuxw Indians Xốp (Vietnamese people) USE Hsu family XNFS (Computer network protocol) USE Giẻ Triêng (Vietnamese people) !Xũ language USE X Network Filing System (Computer network Xope language USE Ju/'hoan language protocol) USE Chopi language !Xu language (Kung-Ekoka) XO (Enzyme) Xoquinoe Indians USE Kung-Ekoka language USE Xanthine oxidase USE Lacandon Indians Xu Xi hua pai Xó (The Fon word) Xorqu, Temple Ruins (China) USE Xu Xi school of painting BT Fon dialect—Etymology USE Shikchin Temple Ruins (China) Xu Xi school of painting Xơ Đăng (Southeast Asian people) Xosa UF Xu Xi hua pai USE Sedang (Southeast Asian people) USE Xhosa (African people) BT Painting, Chinese—Tang-Five dynasties, 618- Xơ đeng (Hdang) (Southeast Asian people) Xosa (African people) 960 USE Sedang (Southeast Asian people) USE Xhosa (African people) Painting, Chinese—Song-Yuan dynasties, 960- Xo deng (Southeast Asian people) Xosa fiction 1368 USE Sedang (Southeast Asian people) USE Xhosa fiction Xúa (Asian people) !Xõ language (May Subd Geog) Xosa language USE Giay (Asian people) UF Gxon language USE Xhosa language Xuan (Musical instrument) !Kõ language (Botswana and Namibia) Xosa literature USE Xun (Musical instrument) Koon language USE Xhosa literature Xuan Loc, Battle of, Xuân Lộc, Long Khánh, Vietnam, Magong language Xoşnaw (Kurdish tribe) (May Subd Geog) 1975 Ngamani language UF Khoshnaw (Kurdish tribe) BT Vietnam War, 1961-1975—Campaigns Tsasi language Khūshnāw (Kurdish tribe) Xuan paper !Xong language (Botswana and Namibia) BT Ethnology—Iraq USE Xuan zhi Xóõ language Kurds Xuan zhi (May Subd Geog) BT Botswana—Languages XP (Computer science) [TS1169] Namibia—Languages USE eXtreme programming UF Chinese rice paper San languages XP (Disease) Rice paper, Chinese Xoan USE Xeroderma pigmentosum Xuan paper USE Hát xoan XP-59A (Jet fighter plane) BT Chinese paper Xoana (May Subd Geog) USE Airacomet (Jet fighter plane) Xuancheng hua pai BT Idols and images—Greece XPath (Computer program language) USE Xuancheng school of landscape painting Wood-carving—Greece BT Programming languages (Electronic Xuancheng school of landscape painting Xoc Site (Mexico) computers) UF Xuancheng hua pai UF Chac Site (Mexico) XPmas BT Landscape painting, Chinese—Ming-Qing Xac Site (Mexico) USE Christmas dynasties, 1368-1912 Xhac Site (Mexico) Xpress Transfer Protocol (Computer network protocol) Xuandi (Chinese deity) BT Mexico—Antiquities UF XTP (Computer network protocol) USE Xuantian Shangdi (Chinese deity) Xocalı Massacre, Xocalı, Azerbaijan, 1992 BT Computer network protocols Xuantian Dadi (Chinese deity) USE Khojaly Massacre, Xocalı, Azerbaijan, 1992 XPS (X-ray photoelectron spectroscopy) USE Xuantian Shangdi (Chinese deity) Xochicalco Site (Mexico) USE X-ray photoelectron spectroscopy Xuantian Shangdi (Chinese deity) (Not Subd Geog) BT Mexico—Antiquities XQuery (Computer program language) UF Beiji Dadi (Chinese deity) Xochimilco, Parque Natural (Mexico) [QA76.73.X575] Beiji Shangshenjün (Chinese deity) USE Parque Natural Xochimilco (Mexico) UF XML query language (Computer program Beiji Xuantian Shangdi (Chinese deity) Xochiquetzal (Aztec deity) (Not Subd Geog) language) Beiji Yousheng Zhenjün (Chinese deity) BT Aztec goddesses BT Declarative programming languages Chen-wu (Chinese deity) [Former heading] Xochitécatl Site (Mexico) Functional programming languages Diyegong (Chinese deity) BT Mexico—Antiquities Query languages (Computer science) Hsüan-tʻien-shang-ti (Taoist deity) [Former Xocó Indians XR-12 (Reconnaissance aircraft) heading] USE Shocó Indians USE Republic XR-12 (Reconnaissance aircraft) Kaitian Dadi (Chinese deity) Xodang (Southeast Asian people) Xris Cyborg (Fictitious character) (Not Subd Geog) Kaitian Xiandi (Chinese deity) USE Sedang (Southeast Asian people) UF Tampambulous, Xris (Fictitious character) Kaitian Yandi (Chinese deity) Xodang language Xris Tampambulous (Fictitious character) Kaitian Zhendi (Chinese deity) USE Sedang language Xris Tampambulous (Fictitious character) Shangdigong (Chinese deity) Xokleng Indians USE Xris Cyborg (Fictitious character) Shangdiye (Chinese deity) USE Shokleng Indians XS-1 (Supersonic plane) Shangdiyegong (Chinese deity) Xoko Indians USE Bell X-1 (Supersonic plane) Shuichang Shangdi (Chinese deity) USE Shocó Indians XSL (Document markup language) Xiao Shangdi (Chinese deity) Xolalgidae (May Subd Geog) UF Extensible Style Language (Document markup Xuandi (Chinese deity) [QL458.2.X65] language) Xuantian Dadi (Chinese deity) UF Xolalgids Extensible Stylesheet Language (Document Xuanwu (Chinese deity) BT Acariformes markup language) Xuanwu Dadi (Chinese deity) Xolalgids BT Document markup languages Xuanwudi (Chinese deity) USE Xolalgidae XSL Transformations (Computer program language) Yuandi (Chinese deity) Xolata Indians USE XSLT (Computer program language) Yuantian Shangdi (Chinese deity) USE Choroti Indians XSLT (Computer program language) Yuanwudi (Chinese deity) Xolo UF Extensible Stylesheet Language Zhenru Dashi (Chinese deity) USE Xoloitzcuintli Transformations (Computer program Zhenwu (Chinese deity) [Former heading] Xolodnyj Jar (Ukraine) language) Zhenwu Dadi (Chinese deity) USE Kholodnyĭ I͡Ar (Ukraine) XSL Transformations (Computer program Zhenwu Dajiangjün (Chinese deity) Xoloitzcuintli (May Subd Geog) language) Zhenwu Dijün (Chinese deity) [SF429.X6] BT Declarative programming languages Zhenwu Shangdi (Chinese deity) UF Mexican hairless dog, Standard Xtacumbilxunaan Cave (Mexico) Zhenwudi (Chinese deity) Standard Mexican hairless dog [F1435.1.X77 (Mayan antiquities)] BT Gods, Chinese Xolo UF Gruta de Xtacumbilxunaan (Mexico) Xuanwu (Chinese deity) BT Hairless dogs BT Caves—Mexico USE Xuantian Shangdi (Chinese deity) Xoloitzcuintli in art (Not Subd Geog) Mexico—Antiquities Xuanwu Dadi (Chinese deity) USE Xuantian Shangdi (Chinese deity)

X-10 Xuanwu Hu (China) of compositions in several forms or types for solo BT Hymenoptera USE Xuanwu Lake (China) xun. Sawflies Xuanwu Lake (China) SA headings for forms and types of music that NT Xyela UF Hou Lake (China) include "xun" and headings with medium of Xyelidae, Fossil (May Subd Geog) Lian Lake (China) performance that include "xun" [QE832.H9] Xuanwu Hu (China) Xunan kabor BT Hymenoptera, Fossil BT Lakes—China USE Melipona beecheii Sawflies, Fossil Xuanwudi (Chinese deity) Xunantunich Site (Belize) Xylamide USE Xuantian Shangdi (Chinese deity) [F1435.1.X82] USE Proglumide Xuch Site (Mexico) BT Belize—Antiquities Xylan endoxylosidases [F1435.1.X8] Xunda Cup USE Xylanases BT Mexico—Antiquities USE Xun da bei Xylanases Xueba guo jia gong yuan (Taiwan) !Xung language UF Endoxylanases UF Hsueh-pa kuo chia kung yüan (Taiwan) USE Kung-Ekoka language Xylan endoxylosidases Shei-pa kuo chia kung yüan (Taiwan) [Former Xunkhwe (African people) BT Glycosidases heading] USE Kxoe (African people) Xylans Shei-pa National Park (Taiwan) Xunkhwe language [QP702.X87] Xueba National Park (Taiwan) USE Kxoe language UF Polyxyloses BT National parks and reserves—Taiwan Xunzal language BT Polysaccharides Xueba National Park (Taiwan) USE Hunzib language Xylaria (May Subd Geog) USE Xueba guo jia gong yuan (Taiwan) Xuquer River (Spain) BT Xylariaceae Xuebaoshan Guojiaji Ziran Baohuqu (China) USE Júcar River (Spain) Xylariaceae (May Subd Geog) UF Chongqing Xuebaoshan Guojiaji Ziran Xuquila, Nuestra Señora de [QK623.X9] Baohuqu (China) USE Juquila, Nuestra Señora de BT Xylariales Xuebaoshan Nature Reserve (China) Xuriguera, Joan Baptista, 1908-1987 NT Anthostomella Xuebaoshan Ziran Baohuqu (China) — Characters Hypoxylon BT National parks and reserves—China Xurima Indians Rosellina Natural areas—China USE Waica Indians Xylaria Xuebaoshan Nature Reserve (China) Xuthi (Asian people) Xylariales (May Subd Geog) USE Xuebaoshan Guojiaji Ziran Baohuqu (China) USE Jat (Asian people) [QK623.X] Xuebaoshan Ziran Baohuqu (China) XV de Novembro Plaza (Porto Alegre, Rio Grande do BT Pyrenomycetes USE Xuebaoshan Guojiaji Ziran Baohuqu (China) Sul, Brazil) NT Diatrypaceae Xuefeng Mountains (China) USE Praça XV de Novembro (Porto Alegre, Rio Phyllachoraceae UF Xuefeng Shan (China) Grande do Sul, Brazil) Xylariaceae BT Mountains—China Xvarshi language Xylazine (May Subd Geog) Xuefeng Shan (China) USE Khvarshi language BT Muscle relaxants USE Xuefeng Mountains (China) Xvaršiuli language Sedatives Xuenkal Site (Mexico) USE Khvarshi language Thiazines BT Mexico—Antiquities Xweda (African people) Veterinary drugs Xuetes USE Xwela (African people) Xyleborus (May Subd Geog) USE Chuetas Xwela (African people) (May Subd Geog) [QL596.S35] Xuhwe (African people) [DT541.45.X84] BT Scolytidae USE Kxoe (African people) UF Ajuda (African people) Xylem Xuhwe language Feda (African people) BT Plant cells and tissues USE Kxoe language Fera (African people) Vascular system of plants Xujia He Formation (China) Fida (African people) NT Tracheary cells USE Xujiahe Formation (China) Houeda (African people) Xylene Xujiahe Formation (China) Hweda (African people) BT Aromatic compounds UF Xujia He Formation (China) Hwida (African people) NT Xylenol BT Formations (Geology)—China Juda (African people) Xylenol (May Subd Geog) Geology, Stratigraphic—Triassic Ouida (African people) UF Dimethylphenol Xukhwe (African people) Ouidah (African people) BT Xylene USE Kxoe (African people) Peda (African people) Xyletinidae Xukhwe language Phela (African people) USE Anobiidae USE Kxoe language Phera (African people) Xylinidae Xukru Indians Whydah (African people) USE Noctuidae USE Xikrin Indians Xweda (African people) [Former heading] Xylitol Xukuru language Xwela-Gbe (African people) BT Polyols USE Kariri language BT Ethnology—Benin Sugar substitutes XUL (Document markup language) Xwela-Gbe (African people) Xylo-marimba UF XML-based User Interface Language USE Xwela (African people) USE Xylorimba (Document markup language) Xwela-Gbe language Xylocaine BT Document markup languages USE Xwela language USE Lidocaine Xumi Shan Grottoes (China) Xwela language (May Subd Geog) Xylococcus (May Subd Geog) USE Xumishan Caves (China) UF Fera language [QL527.M37] Xumishan Caves (China) Houeda language BT Margarodidae UF Xumi Shan Grottoes (China) Peda language Xylocopa (May Subd Geog) Xumishan Grottoes (China) Phela language [QL568.A53] Xumishan Shiku (China) Phera language BT Anthophoridae BT Buddhist cave temples—China Xwela-Gbe language NT Xylocopa pubescens Caves—China BT Benin—Languages Xylocopa sulcatipes Xumishan Grottoes (China) Gbe languages Xylocopa pubescens (May Subd Geog) USE Xumishan Caves (China) Xwlemi dialect [QL568.A53] Xumishan Shiku (China) USE Lummi dialect BT Xylocopa USE Xumishan Caves (China) XX (Group of artists) Xylocopa sulcatipes (May Subd Geog) Xun (African people) [N6967.5.X9] [QL568.A53] USE Kxoe (African people) UF Vingt (Group of artists) BT Xylocopa Xun (Musical instrument) (May Subd Geog) RT Art, Belgian Xylocopidae UF Hsüan (Musical instrument) [Former heading] XX Settembre Street (Genoa, Italy) USE Anthophoridae Xuan (Musical instrument) [Former heading] USE Via Venti Settembre (Genoa, Italy) Xylographica BT Flute XXI Aprile Condominium (Milan, Italy) USE Block books Musical instruments—China USE Condominio Venti Uno Aprile (Milan, Italy) Xylography Xun da bei XXX films USE Block books UF Xunda Cup USE Pornographic films Wood-engraving BT Architecture—Awards—China XY plotters Xylomidae Xun language UF Plotters, XY USE Stratiomyidae USE Kxoe language BT Digital-to-analog converters Xylopagurus (May Subd Geog) !Xun language (Kung-Ekoka) Xyela (May Subd Geog) [QL444.M33] USE Kung-Ekoka language [QL568.X7] BT Paguridae Xun music (May Subd Geog) BT Xyelidae Xylophacos Here are entered compositions not in a specific Xyelidae (May Subd Geog) USE Astragalus (Plants) form or of a specific type for solo xun, and collections [QL568.X7]

X-11 Xylophasidae Xyloside USE Noctuidae BT Glycosides Xylophilidae Xylosma (May Subd Geog) USE Euglenidae [QK495.F55] Xylophone (May Subd Geog) BT Flacourtiaceae [ML1048 (History)] Xylylanthranilic acid [MT719-MT719.8 (Instruction)] USE Mefenamic acid UF Song bells Xynthia Storm, 2010 Straw fiddle BT Cyclones BT Percussion instruments Windstorms RT Marimba Xyrauchen (May Subd Geog) Vibraphone [QL638.C27 (Zoology)] NT Amadinda BT Catostomidae Angklung NT Razorback sucker Balo Xyrauchen texanus Heliphon USE Razorback sucker Kaw law (Musical instrument) Xyridaceae (May Subd Geog) Menzan [QK495.X9] Sticcado pastorale BT Commelinales Tingklik NT Yelloweyed grass Xylorimba Xyris Xylophone and harpsichord music (May Subd Geog) USE Yelloweyed grass [M284.X9 (Collections)] Xyris tennesseensis [M285.X9 (Separate works)] USE Tennessee yelloweyed grass UF Harpsichord and xylophone music Xyrocharax Xylophone and piano music USE Cyphocharax [M284.X9 (Collections)] Xysticus (May Subd Geog) [M285.X9 (Separate works)] [QL458.42.T56] UF Piano and xylophone music BT Thomisidae Xylophone and piano music, Arranged Xystodesmidae (May Subd Geog) [M284.X9 (Collective)] [QL449.65.X9] [M285.X9 (Separate works)] BT Polydesmida Xylophone and piano music (Jazz) NT Brachoria USE Jazz Cherokia Xylophone and piccolo music Deltotaria USE Piccolo and xylophone music Dixioria Xylophone controller (Musical instrument) Fontaria USE Mallet controller (Musical instrument) Pachydesmus Xylophone music (May Subd Geog) Xystosomus (May Subd Geog) [M175.X6] [QL596.C2 (Zoology)] Here are entered compositions not in a specific BT Ground beetles form or of a specific type for solo xylophone, and Xystramia collections of compositions in several forms or types for solo xylophone. USE Epigonus SA headings for forms and types of music that Xystroplites include "xylophone" or "xylophones" and USE Lepomis headings with medium of performance that XYZ Affair, 1797-1798 include "xylophone" or "xylophones" UF X Y Z Affair, 1797-1798 Xylophone with orchestra BT France—History—Directory, 1795-1799 [M1038] United States—History—1797-1801 — Solo with piano [M1039] Xylopia (May Subd Geog) [QK495.A6] BT Annonaceae Xylorictidae (May Subd Geog) [QL561.X9] UF Xyloryctidae BT Lepidoptera Moths NT Nephantis Xylorimba (May Subd Geog) UF Marimba-xylophone Xylo-marimba BT Marimba Xylophone Xylorimba music (May Subd Geog) Here are entered compositions not in a specific form or of a specific type for solo xylorimba, and collections of compositions in several forms or types for solo xylorimba. SA headings for forms and types of music that include "xylorimba" or "xylorimbas," and headings with medium of performance that include "xylorimba" or "xylorimbas" Xyloryctes (May Subd Geog) [QL596.S3 (Zoology)] BT Scarabaeidae NT Rhinoceros beetle Xyloryctes jamaicensis USE Rhinoceros beetle Xyloryctidae USE Xylorictidae Xylosciara (May Subd Geog) [QL537.S357 (Zoology)] UF Plastosciara BT Sciaridae Xylose (May Subd Geog) [QP702.X9 (Physiological chemistry)] UF Wood sugar BT Pentoses

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