List of respiratory protective devices approved by the Bureau of Mines
By: by S.J. Pearce and L.B. Berger.
Contributors: Berger, L. B.; United States. Bureau of Mines.
Series: Information circular (United States. Bureau of Mines) -- 7636
Publisher: U.S. Dept. of the Interior, Bureau of Mines
Published: 1952
Place of publication: Washington, DC
Language: eng
Notes: 1