World Federation of Scientific Workers (1946-1994)(12)
Relief Committee for Victims of Fascism (London) / The German Information Bureau(6)
Committee of the German Opposition(5)
Friends of the German People's Front (London)(5)
Kuczynski, Jürgen (1904-1997)(5)
Pugwash Conference on Science and World Affairs (15. : 1966 : Addis Abeba) (1966-)(5)
Pugwash Conference on Science and World Affairs (13, 1964, Karlovy Vary)(4)
Free German League of Culture in Great Britain (1939-1945)(3)
International Economic Conference (1952 : Moskau) (1952-)(3)
Pugwash Conference on Science and World Affairs (26. : 1976 : Mühlhausen/Thüringen) (1976-)(3)
Humboldt-Universität zu Berlin (1949-)(2)
Instituto Nacional de Reforma Agraria (Havanna)(2)
International Symposium Higher Scientific and Technological Education (1962, Moscow)(2)
International Symposium on the Relations between Science and Technology (1969, Bratislava)(2)
Liga für Völkerfreundschaft der DDR (1961-1990)(2)
Pugwash Conference on Science and World Affairs (22, 1972, Oxford)(2)