OKPOKO, Ephraim. Physico-Chemical and Microbial Analyses of Groundwater from The Upper Cretaceous Deposits Underlying Parts of Udi And Eziagu Areas of Southeast, Nigeria. coou African Journal of Environmental Research, [S. l.], v. 1, n. 1, p. 25–41, 2018. Disponível em: https://ajer.coou.edu.ng/index.php/journal/article/view/3. Acesso em: 8 may. 2024.