Dust Respirators: Their Construction and Filtering Efficiency

Author:	Katz, Sidney H.
Additional Authors:	Smith, G. W.
Year:	1926
Document Type:	N/A
SUDOC:	C 22.5:394
Series:	United States Bureau of Mines Reports
Report Number:	Technical Paper 394
Link:	http://digital.library.unt.edu/ark:/67531/metadc66426/