American Society of International Law. Political Science Association.
Director, Representative of the Director-General to the United Nations, External Rel Division, Department of Administration, International Atomic Energy Agency New York Office, One United Nations Plaza since 1988. Secretary of the Board of Trustees and External Relations Coord, United Nations Institute for Training and Research, New York, 8388. Special Assistant to the Executive Director, 1978-1983, Assistant Director of Rch, 1976-1978, Rch Fellow, 1966-1976, United Nations Institute for Training and Research, New York.
Assistant Pol Affairs Officer, Department of Political and Security Council Affairs, United Nations, New York, 1964.