1. Nitrate in ground water and stream base flow in the Lower Susquehanna River Basin, Pennsylvania and Maryland Author/Creator: Lindsey, Bruce D., 1962- author Publication/Creation: Lemoyne, Pennsylvania : U.S. Department of the Interior, U.S. Geological Survey, 1997 Resource Type: Book Access & Availability: Loading
2. Nitrogen and pesticide concentrations in an agricultural basin in north-central Connecticut Author/Creator: Mullaney, John R., author Publication/Creation: Marlborough, Massachusetts : U.S. Geological Survey, 1997 Resource Type: Book Access & Availability: Loading
3. Nutrient sources and analysis of nutrient water-quality data, Apalachicola-Chattahoochee-Flint River basin, Georgia, Alabama, and Florida, 1972-90 Author/Creator: Frick, Elizabeth A. Publication/Creation: Atlanta, Ga. : U.S. Dept. of the Interior, U.S. Geological Survey, 1996 Resource Type: Book Access & Availability: Loading
4. Nutrient sources and analysis of nutrient water-quality data, Apalachicola-Chattahoochee-Flint River basin, Georgia, Alabama, and Florida, 1972-90 Author/Creator: Frick, Elizabeth A., author Publication/Creation: Atlanta, Georgia : U.S. Department of the Interior, U.S. Geological Survey, 1996 Resource Type: Book Access & Availability: Loading
5. Nutrients and pesticides in ground water of the Ozark Plateaus in Arkansas, Kansas, Missouri, and Oklahoma Author/Creator: Adamski, James C., author Publication/Creation: Little Rock, Arkansas : U.S. Geological Survey, 1997 Resource Type: Book Access & Availability: Loading
6. Nutrients, suspended sediment, and pesticides in streams in the Red River of the North basin, Minnesota, North Dakota, and South Dakota, 1993-95 Author/Creator: Tornes, L. H. (Lan H.), author Publication/Creation: Mounds View, Minnesota : U.S. Geological Survey, 1997 Resource Type: Book Access & Availability: Loading