Books

1. The Petroglyph Calendar: An Archaeoastronomy Adventure
   

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2. Puzzling Questions About the Solar System
   

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3. Observing Handbook and Catalogue of Deep-Sky Objects
   

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4. Introduction to Stellar Astrophysics: Volume 2
   

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5. Messages from Space : Crop Circles Bring the First Indisputable Extra-Terrestrial Signs from Space
   

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Books