Concentration tests of manganese ores

Author:	Engel, Abraham L.
Year:	1953
Document Type:	BMRA
Issuing Agency:	U.S. Dept. of the Interior, Bureau of Mines,
SUDOC:	I 28.23:4985
Series:	Report of investigations / United States Department of the Interior, Bureau of Mines ;
Report Number:	4985
Subjects:	Manganese ores--Nevada
	Manganese ores--Mexico
	Manganese ores--California
Link:	https://hdl.handle.net/2027/mdp.39015078478628