EKELEMU, J.K; OKORO, K.O. BIO-ACCUMULATION OF HEAVY METALS IN FIVE FISH SPECIES IN THE LOWER NIGER RIVER AT ILLAH, DELTA STATE. Nigerian Journal of Fisheries, [S. l.], v. 17, n. 1, p. 1941–1945, 2020. Disponível em: https://fisonjournal.org.ng/index.php/njf/article/view/133. Acesso em: 10 jun. 2026.