Riak , D. G. A. and Bill, D. B. A. (2022) “MEASUREMENT OF DEVELOPMENT & CAUSES OF UNDERDEVELOPMENT IN AFRICA”, IJRDO - Journal of Social Science and Humanities Research, 7(8), pp. 179-189. Available at: http://webmail.ijrdo.org/index.php/sshr/article/view/5263 (Accessed: 16November2024).