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A.E.Roy – Astronomy Principles & Practice Price: $25 Please contact us: – Email: Tradersoffer@gmail -Skype: [email protected] Visit checkout link: https://tradersoffer.forex/product/astronomy-principles-practice-by-a-e-roy/ A.E.Roy – Astronomy Principles & Practice Despite remarkable advances in astronomy, space research, and related technology since the first edition of this book was published, the philosophy of the prior editions has remained the same […]