Permissible methane detectors

Author:	Ilsley, L. C.
Additional Authors:	Hooker, A. B.
Year:	1942
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:3643
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	3643
Subjects:	Methane
	Gas detectors
Link:	https://hdl.handle.net/2027/mdp.39015078496802