| Year: | 1988 |
|---|---|
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.2:Is 7 |
| Subjects: | Mines and mineral resources--United States |
| Mineral industries--United States | |
| Links: | https://hdl.handle.net/2027/mdp.39015029873109 |
| https://hdl.handle.net/2027/mdp.39015095154244 | |
| https://hdl.handle.net/2027/uc1.31210024859751 |