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Beyond the Gap: A Novel of the Opening of the World (Opening of the World, 1): Turtledove, Harry, Dufris, William: 9781400153824: Amazon.com: Books
Down to Earth (Colonization, Book Two) by Harry Turtledove: 9780345430236 | PenguinRandomHouse.com: Books
Aftershocks (Colonization, Book Three) by Harry Turtledove: 9780345453679 | PenguinRandomHouse.com: Books
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