Some problems of respiratory protection in the petroleum industry :with suggestions for their solution

Author:	Kintz, George Morton.
Additional Authors:	Fowler, H. C.
Year:	1936
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:6915
Series:	Information circular / Bureau of Mines ;
Report Number:	6915
Subjects:	Breathing apparatus
	Petroleum industry and trade--United States
Link:	https://hdl.handle.net/2027/mdp.39015074128466