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Annual report of research and technologic work on coal fiscal year 1938
| Author: | Fieldner, Arno Carl, |
|---|---|
| Year: | 1939 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:7052 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 7052 |
| Subjects: | Coal mines and mining--United States |
| Coal | |
| Link: | https://hdl.handle.net/2027/mdp.39015077575499 |
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