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1by Selvig, W. A. (Walter Alfred), 1886-1972, Ode, W. H. (William Harlan), 1905-, Gibson, F. H. (Francis Harold), 1903-, Davis, J. D. (Joseph Dana), 1882-1956“...Report of investigations (United States. Bureau of Mines) ;...”
Published 1943
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2“...Report of investigations (United States. Bureau of Mines) ;...”
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