| Author: | Wallace, Robert E. | 
|---|---|
| Year: | 1956 | 
| Document Type: | N/A | 
| SUDOC: | I 19.3:1027-M | 
| Series: | Contributions to economic geology | 
| Report Number: | USGS Bulletin 1027-M | 
| Subjects: | Geology. | 
| Geology -- Montana -- Mineral County. | |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc304283/ |