1. A steady-state unsaturated-zone model to simulate pesticide transport Author/Creator: Rutledge, A. T., author Publication/Creation: Lawrence, Kansas : U.S. Geological Survey, 1991 Resource Type: Book Access & Availability: Loading
2. Summary of the National Atmospheric Deposition Program/National Trends Network intersite-comparison program, November 1978-November 1989 Author/Creator: Gordon, J. D., author Publication/Creation: Denver, Colorado : U.S. Geological Survey, 1991 Resource Type: Book Access & Availability: Loading