@book{27206,
	author = {Spencer, Arthur C. and Paige, Sidney,},
	title = {Geology of the Santa Rita mining area, New Mexico,},
	publisher = {U.S. Govt. Print. Off.,},
	year = {1935.},
	series = {U.S. Geological survey. Bulletin 859},
	address = {Washington,},
	note = {At head of title: United States Department of the Interior.}
}