Respiratory protective devices approved by the Bureau of Mines as of October 1, 1965 / by R.H. Schutz, B.I. Ferber and E.J. Kloos.
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Format: | Government Document Book |
Language: | English |
Published: |
Washington, D.C. :
U.S. Dept. of the Interior, Bureau of Mines,
1966.
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Series: | Information circular (United States. Bureau of Mines) ;
8281. |
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