by the Council in 1963, 1965, 1966, 1968, 1969, 1970, 1971, and 1972. 13 Security Council issued a note (S/10873),4° on 31 January 1973 indicating that following consultations with the members of the Council it had been agreed that the time-limit fixed in resolution 320 ( 1972) for the submission of reports by the Committee established in pursuance of Security Council resolution 253 (1968), had been extended runtil 28 February 1973. 40 See Official Records of the Security Council, Twenty-eighth Year, Supplement for January, February and March 1973. 