| Author: | Hornor, R. R. |
|---|---|
| Year: | 1922 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.23:2343 |
| Series: | Report of investigations / United States. Bureau of Mines ; |
| Report Number: | 2343 |
| Subject: | Mine timbering--Bibliography |
| Link: | https://hdl.handle.net/2027/mdp.39015086555045 |