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Advancing coal mining technology research, development, and demonstration in fiscal year 1977
| Year: | 1977 |
|---|---|
| Document Type: | USBI |
| Issuing Agency: | Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:8730 |
| Series: | Information circular - Bureau of Mines ; |
| Report Number: | 8730 |
| Subjects: | Coal mines and mining--Research |
| Mining engineering | |
| Link: | https://hdl.handle.net/2027/mdp.39015078453670 |
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