Department of Biology, The University of North Dakota, 58202, Grand Forks, ND, U.S.A.
L. Elliot Shubert
Civil Engineering Dept., Pennsylvania State University, 16802, University Park, PA, U.S.A.
Kenneth Crowley
Water and Air Resources Division, Civil Engineering, University of Washington, 98195, Wash., Seattle, U.S.A.
John F. Thielke
Head of Environmental Section, Central Electricity Generating Board, Room 306, Land House, 20 Newgate Street, EC1A 7AX, London, England
D. H. Lucas
The Center for Agricultural and Rural Development, Iowa State University, 578 East Hall, 50011, Ames, Iowa, U.S.A.
Earl O. Heady
Dept. of Hydrology and Water Resources, The University of Arizona, 85721, Tucson, AZ, U.S.A.
Michael D. Bradley
Southern Illinois University-Edwardsville, Business Division, 62025, Ill., U.S.A.
Robert E. Kohn
Department of Botany, Pacific Biomedical Research Center, University of Hawaii, 96822, Honolulu, Hawaii, U.S.A.
S. M. Siegel & B. Z. Siegel
The City of New York Department of Air Resources, Bureau of Technical Services, 51 AstorPlace, 10003, New York City, N.Y., U.S.A.
M. Lieberstein