The ores of copper, lead, gold and silver

Author:	Fulton, Charles Herman,
Year:	1916
Document Type:	USBM
Issuing Agency:	U.S.Bureau of Mines,
SUDOC:	I 28.7:143
Series:	Technical paper / United States. Bureau of Mines ;
Report Number:	143
Subjects:	Gold ores
	Silver ores
	Copper ores
	Lead ores
Link:	https://hdl.handle.net/2027/mdp.39015077565540