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Agricultural Chemicals in Iowa's Ground Water, 1982-95-- what are the Trends

Published: 1997

Total Pages: 4

Agricultural Chemicals in Iowa's Ground Water, 1982-95-- what are the Trends

Published: 1997

Total Pages: 4

Fact Sheet

Published: 1997

Total Pages: 414

Monthly Catalog of United States Government Publications

Published: 1998

Total Pages: 888

New Publications of the Geological Survey

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Published: 1990

Total Pages: 438

Water Quality in Iowa During ...

Published: 1996

Total Pages: 428

New Publications of the U.S. Geological Survey

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Published: 1998

Total Pages: 78

New Publications of the U.S. Geological Survey

Published: 1998

Total Pages: 616

Water Quality in Iowa

Published: 1994

Total Pages: 758

Water-resources Investigations Report

Published: 2003

Total Pages: 668