African statistical yearbook 1987. Pt. 4, Central Africa, others in Africa = Annuaire statistique pour l'Afrique 1987. Ptie 4, Afrique du Centre, autres en Afrique / United Nations - United Nations. Economic Commission for Africa (Addis Ababa : United Nations, 1990)
Keywords: Afrika; Economic Commission for Africa; OSN; národní statistiky; statistiky; Africa; statistics