@book{27697,
	author = {Singewald, Quentin Dreyer, and Butler, B. S.},
	title = {Ore deposits in the vicinity of the London fault of Colorado,},
	publisher = {U.S. Govt. Print. Off.,},
	year = {1941.},
	series = {U.S. Geological survey. Bulletin 911},
	address = {Washington,},
	note = {At head of title: United States Dept. of the Interior, Harold L. Ickes, secretary. Geological survey, W. C. Mendenhall, director.}
}