1. Analysis of nutrient and ancillary water-quality data for surface and ground water of the Willamette Basin, Oregon, 1980-90 Author/Creator: Bonn, Bernadine, author Publication/Creation: Portland, Oregon : U.S. Geological Survey, 1995 Resource Type: Book Access & Availability: Loading
2. Analysis of nutrients in the surface waters of the Georgia-Florida Coastal plain study unit, 1970-91 Author/Creator: Ham, Lisa K., author Publication/Creation: Tallahassee, Florida : U.S. Geological Survey, 1996 Resource Type: Book Access & Availability: Loading
3. Assessment of water quality, nutrients, algal productivity, and management alternatives for low-flow conditions, south Umpqua River basins, Oregon, 1990-92 Author/Creator: Tanner, Dwight Q., author Publication/Creation: Portland, Oregon : U.S. Geological Survey, 1996 Resource Type: Book Access & Availability: Loading