Proposed Medium-term plan for the period 1980-1983 / vol. I, General Assembly official records, thirty-third session / United Nations. General Assembly MEDIUM-TERM PLAN. INTERNATIONAL SECURITY. MLCM 83/9667 (J) 341.13 UNP New York : United Nations, 1979. 1979. 1979 Text xvi, 282 p. : eng