| Author: | Coffman, Joseph S. |
|---|---|
| Year: | 1984 |
| Document Type: | N/A |
| SUDOC: | I 28.27:8978 |
| Series: | United States Bureau of Mines Reports |
| Report Number: | I. C. 8978 |
| Subjects: | Manganese industry. |
| Manganese mines and mining. | |
| Link: | http://digital.library.unt.edu/ark:/67531/metadc67164/ |