Permissible methane detectors
By: by A.B. Hooker, W.J. Fene and R.D. Currie.
Contributors: Fene, W. J. 1891-; Currie, R. D. 1898-
Series: Bulletin / U.S. Department of Commerce.  Bureau of.Mines ;; 331
Publisher: U.S. G.P.O.
Published: 1930
Place of publication: Washington, D.C
Language: eng
Number of pages: 30
Subjects: Methane; Firedamp
Notes: At head of title : U.S. Department of Commerce. R.P. Lamont, secretary. Bureau of Mines. Scott Turner, director.