prepared for the Office of Research and Development, Office of Technology Transfer and Regulatory Support, U.S. Environmental Protection Agency ; prepared under contract #68-DO-0161 by Environmental Management Support
produced by Tennessee Valley Authority, Environmental Education Section, for Air & Waste Management Association, Education Council ; in cooperation with U.S. Department of Agriculture, Soil Conservation Service ... [and others]
by Kathleen A. McCarthy ... [and others] ; prepared in cooperation with the U.S. Army Environmental Center, U.S. Army Alaska, U.S. Army Corps of Engineers, Alaska District