OKUMAGBA, P. O.; OZABOR, F. The Effects of Socio-Economic Activities on River Ethiope. Journal of Sustainable Society, [S. l.], v. 3, n. 1, p. 1–6, 2014. DOI: 10.11634/216825851403528. Disponível em: http://worldscholars.org/index.php/jss/article/view/528. Acesso em: 29 apr. 2024.