| Author: | Pierce, William Gamewell |
|---|---|
| Year: | 1937 |
| Document Type: | N/A |
| SUDOC: | I 19.3:847-F |
| Series: | Contributions to economic geology |
| Report Number: | USGS Bulletin 847-F |
| Subjects: | Geology. |
| Mines and mineral resources. | |
| Mines and mineral resources -- Montana. | |
| Geology -- Montana. | |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc304228/ |