“United Nations. Economic and Social Council; United Nations. Economic Commission for Africa; United Nations. Statistical Office (1991-12). Interagency programme for statistical measurement of the achievement of social goal and human development progress in the 1990's. UN. ECA Joint Conference of African Planners, Statisticians and Demographers (7th session : 1992, Mar. 02 - 07 : Addis Ababa, Ethiopia). Addis Ababa :. © UN. ECA,. https://hdl.handle.net/10855/12625"