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1by Wahrhaftig, Clyde, 1919-, Lanphere, Marvin A., 1933-, Leopold, Estella B., Wolfe, Jack A., 1936-Subjects: “...Coal. fast (OCoLC)fst00865087...”
Published 1969
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2by Hawley, C. C. (Charles Caldwell), 1929-Subjects: “...Ore deposits. fast (OCoLC)fst01047477...”
Published 1969
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8by Mamet, Bernard L.Subjects: “...Devonian Geologic Period. fast (OCoLC)fst01352702...”
Published 1982
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