Tabular index of Bureau of Mines Information Circulars on mining and milling methods

Author: Thoenen, John Roy,
Year: 1935
Document Type: USBI
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.27:6858
Series: Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number: 6858
Link: https://hdl.handle.net/2027/mdp.39015077568643

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