@book{28168,
	author = {South Dakota Geological Survey and Rothrock, E. P. and Geological Survey (U.S.)},
	title = {Ground water resources of the Sioux Falls area, South Dakota.},
	publisher = {University of South Dakota,},
	year = {1947.},
	series = {Its Report of investigations,},
	address = {Vermillion,},
	note = {At head of title: State of South Dakota. State Geological Survey.}
}