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2. Natural and human factors affecting shallow water quality in surficial aquifers in the Connecticut, Housatonic, and Thames River basins
3. Natural attenuation assessment of contaminated ground water at a gas-turbine manufacturing plant, Greenville, South Carolina
4. Natural attenuation of chlorinated volatile organic compounds in a freshwater tidal wetland, Aberdeen Proving Ground, Maryland
5. Nitrate and other water-quality characteristics, and nitrogen in the unsaturated zone, in the Red Willow and Hitchcock counties special protection area, southwest Nebraska, 1993-95
6. Nitrate and pesticides in ground water of the eastern San Joaquin Valley, California : occurrence and trends
7. Nitrate and pesticides in surficial aquifers and trophic state and phosphorus sources for selected lakes, eastern Otter Tail County, west-central Minnesota, 1993-96
8. Nitrate and selected pesticides in ground water of the Mid-Atlantic region
9. Nitrate concentrations in ground water in the paleovalley alluvial aquifers of the Nemaha Natural Resources District, Nebraska, 1989 and 1994-96
10. Nitrate in ground water and stream base flow in the Lower Susquehanna River Basin, Pennsylvania and Maryland
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