organized by the International Atomic Energy Agency and held in Vienna, 9-13 Dec. 1974. organized by the International Atomic Energy Agency and held in Vienna, 25-29 Nov. 1974. organized by the International Atomic Energy Agency and held in Vienna, 20-24 October 1975. organized by the International Atomic Energy Agency and held in Davos, 16-20 June 1986. organized by the International Atomic Energy Agency and held in Vienna, 23-27 August 1976. organized by the International Atomic Energy Agency and held in Vienna, 27-31 January 1975. organized by the International Atomic Energy Agency and the OECD Nuclear Energy Agency. organized by the International Atomic Energy Agency and held in Berlin (West), 6-10 April 1981. organized by the International Atomic Energy Agency. organized by the International Atomic Energy Agency and held in Otaniemi, Finland, 2-6 Aug. 1976.