GEOCHEMICAL APPRAISAL OF OBUDU RANCH SPRING SOUTH -EASTERN NIGERIA. FULafia Journal of Science and Technology , [S. l.], v. 7, n. 1, p. 5–12, 2021. Disponível em: https://lafiascijournals.org.ng/index.php/fjst/article/view/151. Acesso em: 15 jul. 2026.