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An estimate of chemical loads from ground water to the Grand Calumet River and Indiana Harbor Canal, northwestern Indiana
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Concentrations of Escherichia coli in streams in the Kankakee and lower Wabash River watersheds in Indiana, June-September 1999
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External quality-assurance results for the National Atmospheric Deposition Program
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Quality of wet deposition in the Grand Calumet River Watershed, Northwestern Indiana, October 17, 1995-November 12, 1996
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Quality of wet deposition in the Grand Calumet River Watershed, northwestern Indiana, April 29, 1997-April 28, 1998
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Stability of nitrate-ion concentrations in simulated deposition samples used for quality-assurance activities by the U.S. Geological Survey
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