Economic Geology
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The Clays and Clay Industry of New Jersey
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Clay and Shale Deposits of the Western Provinces [microform]:
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Clay and Shale Deposits of the Western Provinces [microform]: Part III
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Report on the Clay and Shale Deposits of the Western Provinces [microform]:
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Preliminary Report on the Clay and Shale Deposits of the Western Provinces [microform]
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Clays, Their Occurrence, Properties, and Uses, With Especial Reference to Those of the United States
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