LAWAL-ARE, A.O, and O. A. BABARANTI. “HEAVY METAL CONCENTRATIONS IN Pseudotolithus Typus AND Portunus Validus, WATER AND SEDIMENT FROM TARKWA BAY, NIGERIA”. Nigerian Journal of Fisheries, vol. 11, no. 1_2, June 2014, pp. 733-44, https://fisonjournal.org.ng/index.php/njf/article/view/217.