| Author: | Kudlich, Rudolf H., |
|---|---|
| Year: | 1923 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of Commerce, Bureau of Mines, |
| SUDOC: | I 28.23:2520 |
| Series: | Report of investigations / United States. Bureau of Mines ; |
| Report Number: | 2520 |
| Subjects: | Anthracite coal |
| Anthracite coal industry | |
| Antracite coal mines and mining | |
| Link: | https://hdl.handle.net/2027/mdp.39015086546309 |