Annual report of research and technologic work on coal, fiscal year 1940

Author: Fieldner, Arno Carl,
Additional Authors: Rice, W. E.
Year: 1940
Document Type: USBI
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.27:7143
Series: Information circular / Bureau of Mines ;
Report Number: 7143
Subjects: Coal mines and mining--United States
Coal
Link: https://hdl.handle.net/2027/mdp.39015078534461

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