@book{90106,
	author = {Freethey, Geoffrey W. and Cordy, Gail E. and National Regional Aquifer System Analysis Program (U.S.)},
	title = {Geohydrology of Mesozoic rocks in the Upper Colorado River Basin in Arizona, Colorado, New Mexico, Utah, and Wyoming, excluding the San Juan Basin},
	publisher = {U.S. G.P.O.},
	year = {1991.},
	series = {Regional aquifer-system analysis--Upper Colorado River Basin, excluding San Juan Basin},
	address = {Washington}
}