%A United Nations. Economic Commission for Africa %T Survey of economic and social conditions in Africa, 1984-1985 : Twenty-first session of the Commission and twelfth meeting of the Conference of Ministers : Yaounde, Cameroon, 17-21 April 1986 %I United Nations %D 1987 %U https://ci.nii.ac.jp/ncid/BB08869405

AltStyle によって変換されたページ (->オリジナル) /