@book{ Solr-8459485, title = {De Soto quadrangle, Wisconsin--Iowa 7.5-minute series}, editor = {Geological Survey (U.S.)}, address = {Reston, Va.}, publisher = {U.S. Dept. of the Interior, U.S. Geological Survey}, year = {2010}, note = {Relief shown by contours and spot heights.}, note = {Title from title screen (viewed on Aug. 19, 2011).}, note = {"Contour interval 20 feet."}, note = {Includes location map and index to adjoining quadrangles.}, url = {http://purl.fdlp.gov/GPO/gpo11426} }