Physico-Chemical and Bacterialogical Analysis of the Surface Water Used for Domestic Purposes in Okpai and Beneku, Delta State, Nigeria. Global Journal of Human-Social Science, [S. l.], v. 12, n. B13, p. 31–36, 2013. Disponível em: https://socialscienceresearch.org/index.php/GJHSS/article/view/451. Acesso em: 8 aug. 2026.