Onwe, I. M., B. E. B. Akudinobi, C. J. Chizoba, and K. A. Ifeanyichukwu. “Hydrochemical Characterization of Groundwater Quality in Nkalagu District, Southeastern Nigeria”. Asian Journal of Environment & Ecology, Vol. 14, no. 2, Mar. 2021, pp. 34-50, doi:10.9734/ajee/2021/v14i230202.