Akpan, D. A. “Environmental Degradation in Africa: A Challenge to Sustainable Development in Nigeria” in Akinwumi, O. Fwatshak, S. U., Onoja, A., Ogbogbo, C. B. N., Okpeh, Jr. O. (ed.). Technology, Knowledge and Environmental in Africa: A perspective from Nigeria. Zaira, Ahmadu Bello University Press Ltd. 2009, pp. 311-324…………..pg. 912-923
