Adeyemi, A. (2010) “The Productivity Method Of Economic Evaluation Of Biodiversity Application In Bauchi State, Nigeria”, International Journal of Economic Development Research and Investment (IJEDRI), 1(2&3), pp. 55–64. Available at: http://icidr.org.ng/index.php/Ijedri/article/view/744 (Accessed: 24 November 2024).