Analyses of Iowa coals.

Year: 1949
Document Type: USBM
Issuing Agency: U.S. Dept. of the Interior, Bureau of Mines,
SUDOC: I 28.7:706
Series: Technical paper / United States Department of the Interior, Bureau of Mines ;
Report Number: 706
Subjects: Coal--Analysis
Coal mines and mining--Iowa
Link: https://hdl.handle.net/2027/mdp.39015078486134

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