Water Environment Federation
Unknown Author
International Symposium on Challenges in African Hydrology and Water Resources (1984 : Harare, Zimbabwe)
Sandra Postel
Thomas M. Walski
Canada. Environment Canada
John Arundel
Lynette de Silva
United Nations.
Maude Barlow
United States. National Park Service. Region Four Office
Luisa Cortesi
A. James
Catherine M. Ashcraft
Pacific Grove (Calif.). City Council
Helena Krantz
Paola Foladori
Nigel Dudley
Michael Curley
Janine Wilhelm