| Author: | Van Loenen, Richard E. |
|---|---|
| Additional Authors: | Folger, Helen W. |
| Year: | 1990 |
| Document Type: | N/A |
| SUDOC: | I 19.3:1717-D |
| Series: | Mineral resources of wilderness study areas--north-central Colorado |
| Report Number: | USGS Bulletin 1717-D |
| Subjects: | Mines and mineral resources -- Colorado -- Skull Creek Region. |
| Mines and mineral resources -- Colorado -- Willow Creek Region. | |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc304337/ |