| Author: | Gayle, John B. | 
|---|---|
| Additional Authors: | Eddy, William H., | 
| Year: | 1955 | 
| Document Type: | BMRA | 
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, | 
| SUDOC: | I 28.23:5176 | 
| Series: | Report of investigations / United States Department of the Interior, Bureau of Mines ; | 
| Report Number: | 5176 | 
| Subject: | Coking coals | 
| Link: | https://hdl.handle.net/2027/mdp.39015078540450 |