Technologic trends in the minerals industry, 1971

Year:	1973
Document Type:	USBI
Issuing Agency:	U.S. Bureau of Mines,
SUDOC:	I 28.27:8581
Series:	Information circular / Bureau of Mines ;
Report Number:	8581
Subjects:	Mineral industries--United States
	Mineral industries--Technology
Link:	https://hdl.handle.net/2027/mdp.39015078462184