01639nam a2200385Ia 4500 ebr10057296 CaPaEBR m u cr cn||||||||| 980305s1997 enkab sb 001 0 eng d 98123030 0203477545 0419229108 CaPaEBR CaPaEBR (OCoLC)57379782 TD365 .W364 1997eb 363.739/4 21 Water pollution control [electronic resource] : a guide to the use of water quality management principles / edited by Richard Helmer and Ivanildo Hespanhol. 1st ed. London ; New York : E & FN Spon, 1997. xvi, 510 p. : ill., maps. "Published on behalf of UNEP, United Nations Environment Program, Water Supply & Sanitation Collaborative Council, World Health Organization." Includes bibliographical references and index. Electronic reproduction. Palo Alto, Calif. : ebrary, 2009. Available via World Wide Web. Access may be limited to ebrary affiliated libraries. Water quality management. Water Purification. Electronic books. local Helmer, Richard, 1943- Hespanhol, Ivanildo. United Nations Environment Programme. Water Supply and Sanitation Collaborative Council. World Health Organization. ebrary, Inc. http://site.ebrary.com/lib/rucke/Doc?id=10057296 An electronic book accessible through the World Wide Web; click to view 71572 71572