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Respiratory protective devices approved by the Bureau of Mines as of October 16, 1958
| Author: | Kloos, E. J. |
|---|---|
| Additional Authors: | Pierce, S. J. |
| Year: | 1959 |
| Document Type: | USBI |
| Issuing Agency: | U.S. Dept. of the Interior, Bureau of Mines : |
| SUDOC: | I 28.27:7885 |
| Series: | Information circular / United States. Bureau of Mines ; |
| Report Number: | 7885 |
| Subjects: | Breathing apparatus |
| Mine safety | |
| Link: | https://hdl.handle.net/2027/mdp.39015078454884 |
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