| Year: | 1981 |
|---|---|
| Document Type: | USBI |
| Issuing Agency: | United States Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:8844 |
| Series: | Information circular / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 8844 |
| Subject: | Mineral industries--Environmental aspects--Research--United States |
| Link: | https://hdl.handle.net/2027/mdp.39015078457374 |