Otitoloju, A. A., and K.N. Don-Pedro. “Influence of Joint Application of Heavy Metals on Level of Each Metal Accumulated in the Periwinkle Tympanotonus Fuscatus (Gastropoda: Potamididae)”. Revista de Biología Tropical 54, no. 3 (September 1, 2006): 803–814. Accessed May 18, 2024. https://www.revistas.ucr.ac.cr/index.php/rbt/article/view/12791.