| Author: | Hershey, Robert E. |
|---|---|
| Additional Authors: | Williams, Lloyd |
| Year: | 1955 |
| Document Type: | N/A |
| Series: | United States Bureau of Mines Reports |
| Report Number: | R. I. 5148 |
| Subjects: | Coking coal. |
| Coal reserves. | |
| Link: | http://digital.library.unt.edu/ark:/67531/metadc38629/ |