Hydrogeology of the Cambrian-Ordovician aquifer system in the northern Midwest, United States /
Young, H. L.
Siegel, Donald I.
Washington : U.S. G.P.O. ; Denver, CO : For sale by Books and Open-File Reports, U.S. Geological Survey,
1992.
1 col. map in pocket.
Includes bibliographical references (p. B93-B99).
Groundwater
Aquifers
Geology, Stratigraphic
Geology, Stratigraphic