@book{26011,
	author = {Montana Bureau of Mines and Geology.},
	title = {Directory, Montana metal and coal mines.},
	publisher = {State School of Mines,},
	year = {1919.},
	series = {University of Montana bulletin. Bureau of Mines and Metallurgy series,},
	address = {Butte,},
	note = {At head of title: The Montana State Bureau of Mines and Metallurgy.}
}