Rockhounding for Beginners : Your Comprehensive Guide to Finding and Collecting Precious Minerals, Gems, Geodes, & More
Lars W. Johnson
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Format: eBook (EPUB)
Tecnicas de caracterizacion y procedimientos empleados en la mineralogia aplicada al beneficio de minerales
Antonio Aragon
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Format: eBook (EPUB)
Discovering the Mammoth : A Tale of Giants, Unicorns, Ivory, and the Birth of a New Science
John J McKay
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Format: eBook (EPUB)