| Author: | Fieldner, Arno Carl, |
|---|---|
| Year: | 1931 |
| Document Type: | BMRA |
| Issuing Agency: | United States Bureau of Mines, |
| SUDOC: | C 22.12:3079 |
| Series: | Report of investigations / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 3079 |
| Subjects: | Bituminous coal |
| Coal-tar | |
| Coal industry and trade | |
| Link: | https://hdl.handle.net/2027/mdp.39015077567355 |