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2. Seasonal and spatial variability of nutrients and pesticides in streams of the Willamette Basin, Oregon, 1993-95
3. Seasonal and spatial variability of pesticides in streams of the upper Tennessee River basin, 1996-99
4. Selected data from field studies of pesticide runoff to surface waters
5. Selected trace-element and organic contaminants in the streambed sediments of the Potomac River basin, August 1992
6. Shallow ground-water quality adjacent to burley tobacco fields in northeastern Tennessee and southwestern Virginia, spring 1997
7. Shallow ground-water quality beneath cropland in the Red River of the North Basin, Minnesota and North Dakota, 1993-95
8. Shallow ground-water quality beneath rice areas in the Sacramento Valley, California, 1997
9. Shallow ground-water quality in agricultural areas of northern Alabama and Middle Tennessee, 2000-2001
10. Shallow ground-water quality in selected agricultural areas of south-central Georgia, 1994
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