1. Computation and use of volume-weighted-average concentrations to determine long-term variations of selected water-quality constituents in lakes and reservoirs Author/Creator: Wells, Frank C., author Publication/Creation: Austin, Texas : U.S. Geological Survey, 1984 Resource Type: Book Access & Availability: Loading
2. Comparative petrology of cores from two test wells in the eastern part of the Edwards Aquifer, south-central Texas Author/Creator: Deike, Ruth G. (Ruth Gail), author Publication/Creation: Reston, Virginia : U.S. Geological Survey, 1991 Resource Type: Book Access & Availability: Loading
3. Chlorofluorocarbon and tritium age determination of ground-water recharge in the Ryan Flat subbasin, Trans-Pecos Texas Author/Creator: Bartolino, James R., author Publication/Creation: Albuquerque, New Mexico : U.S. Geological Survey, 1997 Resource Type: Book Access & Availability: Loading