61. Use of water chemistry, isotopes, and chlorofluorocarbons to investigate the sources of ground water beneath Loup City, central Nebraska, 2000 Author/Creator: Steele, G. V. Publication/Creation: Denver, CO : U.S. Geological Survey, Information Services [distributor]. Resource Type: Book Access & Availability: Loading
62. Use of water chemistry, isotopes, and chlorofluorocarbons to investigate the sources of ground water beneath Loup City, central Nebraska, 2000 Author/Creator: Steele, G. V., author Publication/Creation: Lincoln, Nebraska : U.S. Department of the Interior, U.S. Geological Survey, 2002 Resource Type: Book Access & Availability: Loading
63. Use of water-quality indicators and environmental tracers to determine the fate and transport of recycled water in Los Angeles County, California Author/Creator: Anders, Robert, 1960- Publication/Creation: Sacramento, Calif. : U.S. Dept. of the Interior, U.S. Geological Survey, 2003 Resource Type: Book Access & Availability: Loading
64. User's guide for mixed-size sediment transport model for networks of one-dimensional open channels Author/Creator: Bennett, James P., author Publication/Creation: Lakewood, Colorado : U.S. Department of the Interior, U.S. Geological Survey, 2001 Resource Type: Book Access & Availability: Loading
65. User's guide for polyethylene-based passive diffusion bag samplers to obtain volatile organic compound concentrations in wells. Part I, Deployment, recovery, data interpretation, and quality control and assurance Author/Creator: Vroblesky, Don A. Publication/Creation: Columbia, S.C. : U.S. Dept. of the Interior, U.S. Geological Survey, 2001 Resource Type: Book Access & Availability: Loading
66. User's guide for polyethylene-based passive diffusion bag samplers to obtain volatile organic compound concentrations in wells. Part 2, Field tests Publication/Creation: Columbia, S.C. : U.S. Dept. of the Interior, U.S. Geological Survey, 2001 Resource Type: Book Access & Availability: Loading
67. User's guide to PHREEQC : a computer program for speciation, reaction-path, advective-transport, and inverse geochemical calculations Author/Creator: Parkhurst, David L., author Publication/Creation: Lakewood, Colorado : U.S. Geological Survey, 1995 Resource Type: Book Access & Availability: Loading
68. Users manual for a branched Lagrangian transport model Author/Creator: Jobson, Harvey E., author Publication/Creation: Reston, Virginia : U.S. Geological Survey, 1993 Resource Type: Book Edition: Revised 1993. Access & Availability: Loading
69. Users manual for a one-dimensional Lagrangian transport model Author/Creator: Schoellhamer, David H., author Publication/Creation: NSTL, Mississippi : U.S. Geological Survey, 1986 Resource Type: Book Access & Availability: Loading
70. Users manual for an expert system (HSPEXP) for calibration of the Hydrological Simulation Program--Fortran Author/Creator: Lumb, Alan M., author Publication/Creation: Reston, Virginia : U.S. Geological Survey, 1994 Resource Type: Book Access & Availability: Loading