Strategic minerals investigations :procedure followed by the Bureau of Mines

Author:	Finch, John Wellington,
Year:	1939
Document Type:	USBI
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.27:7097
Series:	Information Circular / Bureau of Mines ;
Report Number:	7097
Subjects:	Mines and mineral resources
	Mineral industries
	Mining engineering
Link:	https://hdl.handle.net/2027/mdp.39015095086362