Bureau of Mines midget impinger

Author:	Schrenk, H. H.
Additional Authors:	Feicht, Florence L.
Year:	1939
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7076
Series:	Information circular / United States Department of the Interior, Bureau of Mines ;
Report Number:	7076
Subjects:	Dust--Measurement
	Mineral dust--Sampling
Link:	https://hdl.handle.net/2027/mdp.39015077570474