- Author
- Kloos, E. J. | Pearce, S. J.
- Title
- Respiratory Protective Devices Approved by the Bureau of Mines as of October 16, 1958.
- Coporate
- Bureau of Mines, Pittsburgh, PA
- Report
-
IC 7885
1959
27 p. - Keywords
- respirators | protective clothing | safety | breathing apparatus
- Identifiers
- mining engineering