Respiratory protective devices approved by the Bureau of Mines as of December 31, 1968
By: by R. H. Schutz and E. J. Kloos.
Contributors: Kloos, E. J. joint author.; United States. Bureau of Mines.
Edition: A revision.
Series: United States. Bureau of Mines. Information circular ;; 8436; Information circular (United States. Bureau of Mines) ;; 8436.
Publisher: U.S. Bureau of Mines; [for sale by the Supt. of Docs., U.S. Govt. Print. Off.
Published: 1969
Place of publication: [Washington]
Language: eng
Number of pages: 32
Subjects: Breathing apparatus.; Mine safety.
Notes: Bibliography: p. 31.