NNAMONU, E. I.; NKITNAM, E. E.; UGWU, F. J.; EJILIBE, O. C.; EZENWOSU, S. U.; OGBODO, G. U. Physicochemical Assessment of Vulnerability of the River Ebenyi in Eha-Amufu and Environs, Southeast Nigeria. Recent Advances in Biological Research Vol. 6, p. 54-63, 11 jan. 2020.