AHG/ST. 4 (XVI) Rev. 1 these services universally accessible to all children within the shortest possible time; b) give priority to the most deprived and vulnerable children, paying particular attention to disabled children in the expansion of essential services; c) expand day-care facilities with priority in the most needy and economically disadvantaged families; 7. Where education services through conventional school system cannot be provided, alternative strategies for establishing educational facilities for African children should be explored and non-formal and out-of-school opportunities be exploited, based on the principal of self-reliance as far as local manpower, skills, resources and materials permit; 8. The OAU Secretary-General should, in collaboration with all UN Agencies, give Member States all necessary assistance to promote activities in favor of children and to implement their respective national programmes; 9. Member States, who have not yet ratified the International Labor Convention No. 138 concerning minimum age for admission to employment, should do so; 10. Efforts should be made to preserve and develop African arts, languages and culture and to stimulate the interest and appreciation of African children in the cultural heritage of their own countries and of Africa as a whole; 11. Member States should lay emphasis on the principle of meaningful participation of local communities and beneficiary populations in planning and management of basic services and programmes for children; 12. Particular attention should be paid to the needs of refugee and displaced children and that immediate measures should be taken to improve their lot.