| Author: | Ferber, Benjamin I. |
|---|---|
| Additional Authors: | Rhode, Albert., Brenenborg, Fred J. |
| Year: | 1970 |
| Document Type: | BMRA |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines, |
| SUDOC: | I 28.23:7403 |
| Series: | Report of investigations / United States Department of the Interior, Bureau of Mines ; |
| Report Number: | 7403 |
| Subjects: | Respirators (Medical equipment) |
| Breathing apparatus | |
| Filters and filtration | |
| Link: | https://hdl.handle.net/2027/mdp.39015078533570 |