Paḳsher, Menaḥem Mendel ben Daṿid ha-Kohen
Russell Ginns
David Ezra Stein
David de Rothschild
David Macinnis Gill
David Sanderson
David Ramirez
David Ramirez
David Kerr
David Kerr
David Howells
David Sheff
David Goldfischer
David A. deSilva
David Savill
David Triesman
David Dickinson
David Loades
David R. Hawkins
David Freeman
David Perlmutter
David W. Dodick
David Ings
Russell Brand
David S. Wall
Russell Re Manning
David Gallant
David Melling
David Melling
David Melling
David West
David Melling
David Melling
David Nunemaker
David Cairns
David Conradson
David L. Carter
David Wolstencroft
David Anderson
David Matthews
Russell Ash
David Collier-Brown
David Schickler
David R. Rogers
David Canter
David Kirkpatrick
David B. Morris
David Arnold
David Canter
David Eyre
David Canter
David Bailey
David Guggenheim and
David Bailey
Leonard Casson
Jerry R. Perrich
Musaida Mercy Manyuchi
Albert L. Page
Angélica Rada Ariza
Barbara Hauser
Francisco Rubio-Rincon
Frank R. Spellman
American Water Works Association.
Bhola R. Gurjar
Bhola R. Gurjar
Stanley N. Barton
Joanne K. Price
Larry Schimmoller
Michael Curley
D. Scott Smith
G. Bertram Kershaw
Lydia M. Barrett
Allen V. Kneese
Jonathan Letcher
Satinder Ahuja
Water Environment Federation
Frank R. Spellman
Qisheng Zhang
Philip J. W. Roberts
Lawrence K. Wang
Catherine Gonzalez
Christine L. Bean
George A. Raftelis
E. D. de Ruyter van Steveninck
M. S. Moussa
Richard Field
Palau. Office of the President
Frank Spellman
International Gothenburg Symposium (8th 1998 Prague, Czech republic)
Illinois. Bureau of Water
Beatriz Setuáin Mendía
Alaska. Governor's Council on Rural Sanitation.
Glen T. Daigger
C. P. Leslie Grady