Iyi, Emmanuel Chibuike, Okoro, Joel Ejiofor. HYDROGEOCHEMICAL CHARACTERIZATION ASSESSMENT OF GROUNDWATER WITHIN IMICHAEL OKPARA UNIVERSITY OF AGRICULTURE AND ENVIRONS, UMUDIKE SOUTHEASTERN NIGERIA. ijees [Internet]. 2026 Sep. 13 [cited 2026 Sep. 13];11(1):134-57. Available from: https://www.ijees.ielas.org/index.php/ijees/article/view/105