1. Sources and concentrations of dissolved solids and selenium in the San Joaquin River and its tributaries, California, October 1985 to March 1987 Author/Creator: Clifton, Daphne G., author Publication/Creation: Sacramento, California : U.S. Geological Survey, 1989 Resource Type: Book Access & Availability: Loading
2. Trace elements in bed sediments of the San Joaquin River and its tributary streams, California, 1985 Author/Creator: Clifton, Daphne G., author Publication/Creation: Sacramento, California : U.S. Geological Survey, 1989 Resource Type: Book Access & Availability: Loading
3. Analysis of biological data collected in the Bull Run Watershed, Portland, Oregon, 1978 to 1983 Author/Creator: Clifton, Daphne G., author Publication/Creation: Portland, Oregon : U.S. Geological Survey, 1985 Resource Type: Book Access & Availability: Loading