@book{24712,
	author = {Condra, Geo. E.},
	title = {Geology and water resources of a portion of the Missouri river valley in northeastern Nebraska.},
	publisher = {Govt. Print. Off.,},
	year = {1908.},
	series = {Water-supply paper,},
	address = {Washington,},
	url = {http://hdl.loc.gov/loc.gdc/scd0001.0019953824A}
}