Use of isotopes to identify sources of ground water, estimate ground-water-flow rates, and assess aquifer vulnerability in the Calumet Region of northwestern Indiana and northeastern Illinois /
by Robert T. Kay, E. Randall Bayless, and Robert A. Solak ; prepared in cooperation with the U.S. Environmental Protection Agency.

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Full view   University of Michigan
Full view   no.02-4213 2002 The Ohio State University