Industrial gas masks abroad

Author:	Katz, S. H.
Year:	1929
Document Type:	MAIN
Issuing Agency:	U.S. Dept. of Commerce, Bureau of Mines,
SUDOC:	C 22.11:6206
Series:	Information circular / Bureau of Mines ;
Report Number:	6206
Subjects:	Gas masks--Great Britain
	Gas masks--Germany
	Gas masks--France
	Gas masks--Belgium
Link:	https://hdl.handle.net/2027/mdp.39015095082379