@book{26978,
	author = {Trowbridge, Arthur C.},
	title = {Tertiary and Quaternary geology of the lower Rio Grande region, Texas,},
	publisher = {U.S. Govt. Print. Off.,},
	year = {1932.},
	series = {U.S. Geological survey. Bulletin 837},
	address = {Washington,},
	note = {At head of title: United States Department of the Interior.}
}