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by Arnold, Julean Herbert, 1875-1946
Washington : Government Printing Office, 1926
Washington : Government Printing Office, 1926
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by Wang, K. P. (Kung-ping), 1919-
Washington, D.C. : United States Department of the Interior, Bureau of Mines, 1975
Washington, D.C. : United States Department of the Interior, Bureau of Mines, 1975
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