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Mysteries of Mankind: Earth's Unexplained Landmarks
by Donald J. Crump, The Book Division National Geographic Society , Gene S. Stuart — published 1994 |
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The Amazing Universe
— published 1975 — 2 editions |
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Hidden Treasures of the Sea
— published 1988 |
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Our Awesome Earth: Its Mysteries and Its Splendors
by Donald J. Crump, Paul Martin — published 1986 — 2 editions |
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Fun with Physics
— 2 editions |
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America's Hidden Treasures: Exploring Our Little-Known National Parks
— published 1994 |
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Along a Rocky Shore
— published 1990 — 3 editions |
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America's Wild & Scenic Rivers
— published 1983 |
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Dolphins, Our Friends in the Sea: Dolphins and Other Toothed Whales
— published 1986 |
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How Things Work
by Donald J. Crump, National Geographic Society — published 1983 |
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