Technologic and related trends in the mineral industries, 1973,

Year:	1974
Document Type:	USBI
SUDOC:	I 28.27:8643
Series:	Information circular / Bureau of Mines ;
Report Number:	8643.
Subjects:	Mineral industries
	Mineral industries--United States
Link:	https://hdl.handle.net/2027/mdp.39015078463349