Books

1. Exploring Earth in Space (Exploring Science)
   

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2. Sun (First Step Nonfiction)
   

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3. The Kepler Problem : Group Theoretical Aspects, Regularization and Quantization, with Application to the Study of Perturbations (Progress in Mathematical Physics)
   

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4. Essential Relativistic Celestial Mechanics
   

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5. Highlights of Astronomy, Volume 6 : As Presented at the XVIIIth General Assembly of the IAU 1982 (International Astronomical Union Highlights)
   

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Books