1. National water quality assessment of the Georgia-Florida Coastal Plain Study Unit : water withdrawals and treated wastewater discharges, 1990 Author/Creator: Marella, Richard L., author Publication/Creation: Tallahassee, Florida : U.S. Geological Survey, 1996 Format: Book Access & Availability: Loading
2. Nitrate in ground water and spring water near four dairy farms in North Florida, 1990-93 Author/Creator: Andrews, William J., 1962- author Publication/Creation: Tallahassee, Florida : U.S. Geological Survey, 1994 Format: Book Access & Availability: Loading
3. Nutrients in the surface waters of the Georgia-Florida Coastal plain study unit, 1993-95 Author/Creator: Ham, Lisa K., author Publication/Creation: [Reston, Va.] : U.S. Geological Survey, 1997 Format: Book Access & Availability: Loading