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- Catalog of Cygnus Planetary Nebulae
- Cс 2012 by Jana Bilikova. All Rights Reserved
- The Planetary Nebula Club Objects by Month (As Posted by Ted Forte On
- NOT Annual Report 2006
- The COLOUR of CREATION Observing and Astrophotography Targets “At a Glance” Guide
- Wolf-Rayet Stars
- Catalogue of Central Stars of Planetary Nebulae: Expanded Edition
- NASA's Goddard Space Flight Center Laboratory for Astronomy & Solar
- 1992Apj. . .386. .587F the Astrophysical Journal, 386:587-603
- Bibliography of Lick Observatory-Based Research Publications: 2000–2011.5
- A Abell 21, 20–21 Abell 37, 164 Abell 50, 264 Abell 262, 380 Abell 426, 402 Abell 779, 51 Abell 1367, 94 Abell 1656, 147–148
- 2009 - Texas Hash Observing List
- A Robust Statistical Distance Indicator for Planetary Nebulae
- September 14Th 2019 August 2019 7:00Pm at the Herrett Center for Arts & Science College of Southern Idaho
- THE SPATIAL DISTRIBUTION of COOL DUST in PLANETARY NEBULAE J.L. Horaι, L.K. Deutsch2
- IUE References from 1978 Until June 2001
- On the Distances of Planetary Nebulæ
- Dissertation-Htodt.Pdf, 2.8MB