held by the International Atomic Energy Agency at Europahaus, Salzburg, Austria, 4-8 June 1962. held by the International Atomic Energy Agency at Otaniemi, Finland, 30 June-4 July 1975. held by the International Atomic Energy Agency at Berchtesgaden, 1978. held by the International Atomic Energy Agency in Istanbul, 20-24 October 1969. held by the International Atomic Energy Agency at the Fondazione Cini, S. Giorgio Maggiore, Venice, 7-11 May 1962. held by the International Atomic Energy Agency in Paris, 17-21 October 1966. held by the International Atomic Energy Agency in Vienna, 29 Nov.-3 Dec. 1971. Held by the International Atomic Energy Agency, in Vienna, 8-12 October 1962. held by the International Atomic Energy Agency in Vienna, 15-19 March 1976. Organized by the International Atomic Energy Agency and held in Vienna, 7-11 July, 1969.