  A Creation of His Own Tappan's Detroit Observatory (Hardcover) → Paperback ISBN-13: 9780472590063 ISBN-10: 0472590065 Genres: History, Nonfiction, Science & Math ?  A Creation of His Own Tappan's Detroit Observatory (Paperback) → Hardcover ISBN-13: 9780472590070 ISBN-10: 0472590073 Genres: History, Nonfiction, Science & Math ? |
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