Pugwash Conference on Science and World Affairs (13, 1964, Karlovy Vary)(2)
Pugwash Symposium (13, 1971, Frascati)(2)
Conference of Non-Aligned Nations (1964, Cairo)(1)
Pugwash Conference on Science and World Affairs (14, 1965, Venice)(1)
Pugwash Conference on Science and World Affairs (15. : 1966 : Addis Abeba) (1966-)(1)
Pugwash Conference on Science and World Affairs (17. : 1967 : Ronneby) (1967-)(1)
Pugwash Conference on Science and World Affairs (22, 1972, Oxford)(1)