IYI, EMMANUEL CHIBUIKE; OKORO, JOEL EJIOFOR. HYDROGEOCHEMICAL CHARACTERIZATION ASSESSMENT OF GROUNDWATER WITHIN IMICHAEL OKPARA UNIVERSITY OF AGRICULTURE AND ENVIRONS, UMUDIKE SOUTHEASTERN NIGERIA. International Journal of Earth & Environmental Sciences (IJEES), [S. l.], v. 11, n. 1, p. 134–157, 2026. DOI: 10.58885/ijees.v11i1.134.iech. Disponível em: https://ijees.ielas.org/index.php/ijees/article/view/105. Acesso em: 13 sep. 2026.