| Author: | Jeran, P. W. |
|---|---|
| Additional Authors: | Mashey, J. R., |
| Year: | 1970 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Bureau of Mines, |
| SUDOC: | I 28.27:8454 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 8454 |
| Subject: | Coal mines and mining--Data processing |
| Link: | https://hdl.handle.net/2027/mdp.39015077578014 |