AHG/Res. 131 (XX) Central African States (ECCAS), in keeping with the spirit of the Final Act of Lagos and appeals to the relevant UN Specialized Agencies to provide required assistance to this new economic groupings as well as to those existing in East and Southern Africa (PTA, SADCC) and in West Africa (ECOWAS AND CEAO); 5. REQUESTS the Secretary-General of the OAU, in collaboration with the Executive Secretary of the ECA, and with the assistance of the UN Specialized Agencies, to study all ways and means in order to ensure coordination and harmonization of policies and programmes at horizontal and vertical levels, between existing sub-regional and regional economic grouping so as to ensure effective wider co-operation among the Member States; 6. GIVES mandate to the Secretary General of the OAU, in collaboration with the ECA, to undertake required steps and necessary consultations with the Heads Executives of the existing sub-regional and regional economic groupings; 7. TAKES NOTE of steps, arrangements and technical studies already undertaken by the General Secretariat of the OAU, in collaboration with the ECA and UNDP, for the establishment of the African Economic Community and REQUESTS the Secretary-General to submit an interim report on the project to the Twenty-first Ordinary Session of the Assembly.