| Year: | 1975 |
|---|---|
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:8686 |
| Series: | Information circular - Bureau of Mines ; |
| Report Number: | 8686 |
| Subjects: | Noise control--Congresses |
| Mineral industries--Noise control | |
| Link: | https://hdl.handle.net/2027/mdp.39015078462978 |