Andreĭ Voznesenskiĭ
International Congress on Large Dams (11th 1973 Madrid, Spain)
José María Lacarra
Guido Neppi Modona
Norman Joseph Atkinson
A. M. Glebov
Fryderyk Kremser
Julianus Maschietto
Bohumír Polách
Louis Goossens
Chr B. Nielsen
Brazil.
Schneider, Gerhard
S. U. Zuidema
Lacretelle, Jacques de