| Author: | Fieldner, Arno Carl, |
|---|---|
| Additional Authors: | Katz, S. H., Kinney, S. P. |
| Year: | 1922 |
| Document Type: | USBM |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.7:292 |
| Series: | Technical paper / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 292 |
| Subjects: | Gas masks |
| Tunnels | |
| Gases, Asphyxiating and poisonous | |
| Link: | https://hdl.handle.net/2027/mdp.39015077568015 |