A., Nwabueze, A., et al. “Petroleum Hydrocarbons And Heavy Metal Concentrations In Tissues Of Periwinkles <i>Tympanotonus Fuscatus < I> From Warri River In Nigeria”. International Journal Water and Soil Resources Research (IJWSRR), vol. 1, no. 1-3, Oct. 2023, pp. 41-48, http://icidr.org.ng/index.php/ijwsrr/article/view/24.