UMOH, E. S. The Application of Differential Equations in Environmental Management and Sustenance in Nigeria. Journal of Chemical, Mechanical and Engineering Practices (JCMEP), [S. l.], v. 2, n. 3, p. 45–50, 2012. Disponível em: http://icidr.org.ng/index.php/Jcmep/article/view/1092. Acesso em: 19 sep. 2024.