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The Petrified Planet: A Twayne Science-Fiction Triplet -- Long View; Uller Uprising; Daughter of Earth: Murray Fletcher Pratt, H. Beam Piper, Judith Merril, Dr. John D. Clark: Amazon.com: Books
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Uller Uprising by H. Beam Piper, Science Fiction, Adventure: Piper, H. Beam, Clark, John D.: 9781603129886: Amazon.com: Books
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