| Year: | 1971 |
|---|---|
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of Interior, Bureau of Mines, |
| SUDOC: | I 28.27:8527 |
| Series: | Information circular / United States. Bureau of Mines ; |
| Report Number: | 8527 |
| Subjects: | Air--Pollution |
| Zinc | |
| Lead | |
| Copper | |
| Smelting | |
| Sulfur oxides | |
| Link: | https://hdl.handle.net/2027/mdp.39015078514927 |