@book{28637,
	author = {Singewald, Quentin D.},
	title = {Geology and ore deposits of the upper Blue River area, Summit County, Colorado /},
	publisher = {U.S. G.P.O.,},
	year = {1951.},
	address = {Washington, [D.C.] :},
	note = {Seven folded leaves in pocket.}
}