- 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