@book{26021,
	author = {Butler, B. S. and Loughlin, G. F.},
	title = {Ore deposits of Utah,},
	publisher = {Govt. Print. Off.,},
	year = {1920.},
	series = {United States. Geological survey. Professional paper},
	address = {Washington,},
	note = {At head of title: Department of the Interior ...}
}