1. Research Associate, Hydrology Program, Dept. of Land, Air and Water Resources, Univ. of California, Davis, CA 95616.
2. Professor Emeritus, Hydrology Program, Dept. of Land, Air and Water Resources, Univ. of California, Davis, CA 95616.
3. Assistant Research Chemist, Hydrology Program, Dept. of Land, Air and Water Resources, Univ. of California, Davis, CA 95616.