@book{25769,
	author = {Umpleby, Joseph Bertram,},
	title = {Geology and ore deposits of the Mackay region, Idaho,},
	publisher = {Govt. Print Off.,},
	year = {1917.},
	series = {United States.  Geological survey. Professional paper 97},
	address = {Washington,},
	note = {At head of title: Department of the Interior.}
}