| Author: | Johnston, Kenneth H. |
|---|---|
| Year: | 1960 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Department of the Interior, Bureau of Mines, |
| SUDOC: | I 28.27:7969 |
| Series: | Information circular / Bureau of Mines ; |
| Report Number: | 7969 |
| Subject: | Petroleum mining |
| Link: | https://hdl.handle.net/2027/mdp.39015078461053 |