J. G. M. van der Lubbe
€126.00
Jacek Makinia
€180.00
Gustaf Olsson
€90.00
Organisation for Economic Co-o
€36.00
Guillaume P. Gruère
€60.00
Marcos von Sperling
Olivier Durand-Lasserve
Carlos Augusto de Lemos Cherni
€162.00
Stuart Hamilton
€120.00
Faisal I. Hai
€174.00
Konstantina Velkushanova
€168.00
John Bratby
P. N. L. Lens
Edward A. Ackerman
€150.79
Allen V. Kneese
€249.39
Water Environment Federation
€73.20
R. L. Lenton
€27.59
Nick Higham
€17.99
Mackenzie Leo Davis
€143.54
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