UKA, A., and I. C OBIJIAKU. “POTENTIATION EFFECT OF VITAMIN E ON REDUCED DOSAGE OF OVAPRIM IN INDUCED SPAWNING OF Clarias Gariepinus”. Nigerian Journal of Fisheries, vol. 16, no. 1, June 2019, pp. 1580-3, https://fisonjournal.org.ng/index.php/njf/article/view/145.