Astronomy
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Concise Catalog of Deep-Sky Objects (Astrophysical Information for 550 Galaxies, Clusters and Nebulae) (2nd Edition)
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The Earth (Space Travels)
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21st Century Astronomy (7th Edition)
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Deep Sky Observing (An Astronomical Tour) (2nd Edition)
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Choosing and Using a New CAT (Getting the Most from Your Schmidt Cassegrain or Any Catadioptric Telescope) (2nd Edition)
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