1. Nitrogen transport in a shallow outwash aquifer at Olean, Cattaraugus County, New York Author/Creator: Yager, Richard M., author Publication/Creation: Ithaca, New York : U.S. Geological Survey, 1988 Resource Type: Book Access & Availability: Loading
2. Nomenclature of regional hydrogeologic units of the Southeastern Coastal Plain aquifer system Author/Creator: Miller, James A. 1939- (James Anderson), author Publication/Creation: Atlanta, Georgia : U.S. Geological Survey, 1988 Resource Type: Book Access & Availability: Loading
3. Nonpoint-source agricultural chemicals in ground water in Nebraska : preliminary results for six areas of the High Plains aquifer Author/Creator: Chen, Hsiu-Hsiung, 1937- author Publication/Creation: Lincoln, Nebraska : U.S. Geological Survey, 1987 Resource Type: Book Access & Availability: Loading
4. A numerical solution for the diffusion equation in hydrogeologic systems Author/Creator: Ishii, Audrey L., author Publication/Creation: Urbana, Illinois : U.S. Geological Survey, [1989] Resource Type: Book Access & Availability: Loading