OSUNKWO, Pantaleon. Nigeria’s Poor Urban Quality: A Challenge to Sustainable Environment. coou African Journal of Environmental Research, [S. l.], v. 1, n. 1, p. 165–176, 2018. Disponível em: http://ajer.coou.edu.ng/index.php/journal/article/view/13. Acesso em: 12 nov. 2024.