Jacek Partyka
Jacek Lasa
Jacek Wozniak
Jacek Partyka
Dariusz Jacek Jakóbczak
Jacek KÜHL
Jacek Kall
Jacek Weyers
Jacek Lasa
Jacek Kall
Jacek Dabala
Jacek Lubecki
Jacek Kall
Jacek Weyers
Jacek Dabala
Jacek Lubecki
Jacek Mianowski
Jacek Lasa
Jacek Jędrysiak
Jacek Dukaj
Jacek Kubera
Jacek Kubera
Maria Ulatowska Jacek Skowronski
Jacek Kubera
Jacek Pogorzelski
Jacek Witkos
Jacek Port
Jacek Witkos
Jacek Kubera
Jacek Marciniak
Jacek F. Gieras
Jacek Galinski
Jacek Maria Kurczewski
Jacek Zalesny
Jacek Dehnel
Jacek Dukaj
Jacek Mianowski
Jacek Dehnel
Jacek Wieclawski
Jacek Gruszczyński
Jacek F. Gieras
Jacek Kochanowicz
Jacek Kochanowicz
Jacek F. Gieras
Jacek F. Gieras
Jacek Pogorzelski
Jacek Pogorzelski
Leonard Casson
Musaida Mercy Manyuchi
Albert L. Page
Angélica Rada Ariza
Barbara Hauser
Bhola R. Gurjar
Joanne K. Price
Larry Schimmoller
Michael Curley
D. Scott Smith
Lydia M. Barrett
Allen V. Kneese
Jonathan Letcher
Satinder Ahuja
Water Environment Federation
Qisheng Zhang
Philip J. W. Roberts
Catherine Gonzalez
Christine L. Bean
E. D. de Ruyter van Steveninck
M. S. Moussa
Palau. Office of the President
Frank Spellman
Beatriz Setuáin Mendía
Alaska. Governor's Council on Rural Sanitation.
Glen T. Daigger
C. P. Leslie Grady
National Association of Waste Transporters (U.S.)
Water Environment Federation
United States. Environmental Protection Agency. Region V.
E. Drannon Buskirk
B. L. Sawhney
E. Drannon Buskirk
Stephen R. Pearlman
Richard H. Sullivan
United States. Environmental Protection Agency. Office of Water Program Operations.