| Author: | Jackson, Charles F. |
|---|---|
| Year: | 1941 |
| Document Type: | N/A |
| SUDOC: | I 28.23:3596 |
| Series: | United States Bureau of Mines Reports |
| Report Number: | R. I. 3596 |
| Subjects: | Mines and mineral resources. |
| Mineral industries -- United States. | |
| Link: | https://digital.library.unt.edu/ark:/67531/metadc38437/ |