proceedings, ASCE Irrigation and Drainage Division and ASCE Water Resources Planning and Management Division Specialty Conference, Donaldson Brown Center for Continuing Education, Virginia Polytechnic Institute and State University, July 26-28, 1978 ; sponsors, Irrigation and Drainage Division and Water Resources Planning and Management Division of the American Society of Civil Engineers, Virginia Water Resources Research Center, cooperating sponsors, Universities Council on Water Resources ... [and others] ; host, Roanoke Branch, Virginia Section, ASCE
Wisconsin Seminar on Natural Resource Policies in Relation to Economic Development and International Cooperation (1977-1978 : University of Wisconsin--Madison)
edited by Edward Helminski and Joanna Mack ; sponsored by the National Conference of State Legislatures, Committee on Science and Technology ... [and others]