Silicosis among miners

Author:	Sayers, Royd Ray,
Year:	1925
Document Type:	USBM
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	C 22.5:372
Series:	Technical paper / United States Department of the Interior, Bureau of Mines ;
Report Number:	372
Subjects:	Silicosis
	Coal miners
Link:	https://hdl.handle.net/2027/mdp.39015077316175