OKEREKE, A.N, and C.F EZEAFULUKWE. “EFFECTS OF SOAKING TIME INTERVALS OF HEAVY METALS IN OYSTER IN A CONTAMINATED ZONE IN RIVERS STATE”. Nigerian Journal of Fisheries, vol. 15, no. 1, June 2018, pp. 1400-4, https://fisonjournal.org.ng/index.php/njf/article/view/171.