National Audubon Society...
National Audubon Society
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Rock Collecting for Kids: An...
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Remarkable Creatures
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Collecting Rocks, Gems and...
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Rockhounding Utah: A Guide to...
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The Illustrated Guide to...
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Simon & Schuster's Guide to...
Simon & Schuster
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Student Workbook for...
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One River
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Rockhounding Oregon: A Guide...
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The Egyptologist
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Rockhounding Washington: A...
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Rocks, Gems and Minerals: A...
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A Beachcomber's Guide to...
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Pam Gale
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Rockhounding New Mexico: A...
Martin Freed,
Ruta Vaskys
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Gem Trails of Oregon
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Rockhounding Colorado: A...
William A Kappele,
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Robert Beard
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Introduction to Radioactive...
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Gem Trails of Arizona
James R Mitchell
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