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- Analysis of the Effect of El Niño and La Niña on Tecocomulco Lake, Central Basin, Mexico
- Plant Extracts for Larvicidal Activity Against Aedes Fluviatilis
- A Checklist of Asteraceae from Pedra Do Lagarto, Santa Maria, Rio Grande Do Sul, Brazil
- Seed Bank from Abandoned Pastures in the Coastal Region of Paraná
- Benjamin Lincoln Robinson 1864-1935
- SEED GERMINATION STUDIES of SELECTED GALAPAGOS ISLANDS ANGIOSPERMS by Conley K
- Phylogeny of the Coneflowers and Relatives (Heliantheae: Asteraceae) Based on Nuclear Rdna Internal Transcribed Spacer (ITS)
- FOLIAR ARCHITECTURE of INDIAN Spilanthes Jacq.: MEMBERS of the TRIBE HELIANTHEAE of SUB FAMILY ASTEROIDEAE Original Research
- Herbicide Weed Control – Induced Differential Tolerance and Productivity in Cowpea Plants
- Chromosome Counts of Compositae from the United States, Mexico
- Congreso 2007 De La Sociedad Española De Malherbología
- Análisis Florístico De Dos Áreas Con Bosque Mesófilo De Montaña En El Estado De Hidalgo, México: Eloxochitlán Y Tlahuelompa Acta Botánica Mexicana, Núm
- Chromosome Counts of Compositae from the United States, Mexico, and Guatemala
- Diversity of Wild Mammals in a Megalopolis: Mexico City, Mexico
- Observations on Insect Visitors to Flowering Plants on Isla Santa Cruz, Part II
- Niger, Guizotia Abyssinica (L.F.) Cass