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Where Do Mountains Come From, Momma?
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Where Do Rivers Go, Momma?
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Weird Rocks
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101 American Fossil Sites You've Gotta See
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101 American Geo-Sites You've Gotta See
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Rocks from Space
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Ice Age Mammals of North America: A Guide to the Big, the Hairy, and the Bizarre
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Glacial Lake Missoula: And Its Humongous Floods
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