| Author: | McAnally, S. G. |
|---|---|
| Year: | 1931 |
| Document Type: | MAIN |
| Issuing Agency: | U.S. Dept. of Commerce, Bureau of Mines, |
| SUDOC: | C 22.11:6448 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 6448 |
| Subject: | Mines and mineral resources--Pennsylvania |
| Link: | https://hdl.handle.net/2027/mdp.39015095085869 |