European Peace Research Conference (4, 1967, Den Haag)(1)
Kuczynski, Jürgen (1904-1997)(1)
North American Peace Research Conference (5, 1967, Cambridge)(1)
Peace Research Conference (1967, Den Haag)(1)
Pugwash Conference on Science and World Affairs (17. : 1967 : Ronneby) (1967-)(1)