Altitude, depth, and thickness of the Galena-Platteville bedrock unit in the subcrop area of Illinois and Wisconsin /Publisher: [Denver, Colo. : Information Services, distributor],
Date: 2000. This title can be found in 1 Iowa libraries.
Potential for aquifer recharge in Illinois : appropriate recharge areas /Author: Keefer, Donald A.
Publisher: [Champaign, Ill.] : Illinois Department of Energy and Natural Resources, Illinois State Geological Survey,
Date: 1990. This title can be found in 1 Iowa libraries.
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