Metcalf & Eddy, inc. ... [and others] ; [sponsored by] U.S. Environmental Protection Agency, Environmental Research Information Center, Technology Transfer, Office of Water Programs Operations [and] U.S. Army Corps of Engineers [in cooperation with] U.S. Department of Agriculture
INTELECOM Intelligent Communications and The Partnership for Environmental Technology Education ; produced and directed by David Weisman ; written by John Svetlik
sponsored by the International Association on Water Pollution Research (IAWRP), the South African National Committee for IAWRP, in collaboration with the Israeli National Committee for IAWRP ; organized by the Conference Division of the Council for Scientific and Industrial Research (CSIR) on behalf of the sponsors
submitted to U.S. Environmental Protection Agency ... by National Association of Plumbing-Heating-Cooling Contractors and Enviro-Management & Research, Inc