@book{27210,
	author = {Lovering, T. S. and Colorado Geological Survey},
	title = {Geology and ore deposits of the Montezuma Quadrangle, Colorado},
	publisher = {U.S. Govt. Print. Off.,},
	year = {1935.},
	address = {Washington :},
	note = {At head of title: United States Department of the Interior.}
}