| Author: | Abernathy, R. F. |
|---|---|
| Additional Authors: | Gibson, F. H. |
| Year: | 1962 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| Series: | Information Circular / Bureau of Mines ; |
| Report Number: | 8163 |
| Subject: | Coal |
| Link: | https://hdl.handle.net/2027/mdp.39015077564733 |