T . J., Akaahan, et al. “Bioassay of the Ultrastructural Characteristics in the Kidney and Liver of the African Catfish, Clariasgariepinus Juveniles Exposed to Graded Concentration of Zinc.” International Journal of Environment, Agriculture and Biotechnology, vol. 1, no. 3, 2016, pp. 448–56. Crossref, https://doi.org/10.22161/ijeab/1.3.22.