@book{27491,
	author = {Bascom, F. and Stose, George Willis,},
	title = {Geology and mineral resources of the Honeybrook and Phoenixville quadrangles, Pennsylvania,},
	publisher = {U.S. Govt. Print. Off.,},
	year = {1938.},
	series = {U.S. Geological survey. Bulletin 891},
	address = {Washington,},
	note = {At head of title: United States Department of the Interior...Geological survey...}
}