International Symposium on Processes Governing the Movement and Fate of Contaminants in the Subsurface Environment (1989 : Stanford University, Calif.)
by Glenn A. Hearne ... [and others] ; prepared in cooperation with the Colorado Department of Health, U.S. Environmental Protection Agency, and the U.S. Soil Conservation Service
by Peter E. Church ... [and others] ; in cooperation with the U.S. Environmental Protection Agency, Monitoring and Measurement for the 21st Century Initiative
by Jennifer G. Savoie ... [and others] ; prepared in cooperation with the Air Force Center for Environmental Excellence and the U.S. Environmental Protection Agency
by Thomas J. Mack ... [and others] ; prepared in cooperation with the U.S. Environmental Protection Agency and the New Hampshire Department of Environmental Services