Adoption of the report of the Ad Hoc Committee to the 13th session of the General Assembly : proposed programme budget for the biennium 1976-1977 and medium-term plan for the period 1976-1979 : adminitrative and financial implications of Report of the Ad Hoc Committee on the Restructuring of the Economic and Social Sectors of the United Nations System : statement submitted by the Secretary-General in accordance with rule 153 of the rules of procedure