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Outdoor School: Rock, Fossil,...
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Earth's Resources Geo Facts
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Nature Stories: Little Comet...
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The secrets of metals
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Collector's Guide to the...
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Geopedia: A Brief Compendium...
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Stone by Stone: The...
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The Big Book of Bling: Ritzy...
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Gemstones & Minerals of...
Lin Sutherland,
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Rockhounding Arizona
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