NWAONYECHE, Napoleon Chinedu; CHUKWUGOZIM-UMEJURU, Ruth Uchechukwu; AGBONAVBARE, Phoebe Obiageli. Evaluation of Heavy Metal Concentrations in Unshelled Periwinkles (Tympanotonus fuscatus) from Rumuolumeni Creek, Rivers State, Niger Delta, Nigeria. Faculty of Natural and Applied Sciences Journal of Scientific Innovations , Port Harcourt, Nigeria, v. 7, n. 1, p. 38–45, 2025. DOI: 10.63561/fnas-jsi.v7i1.1101. Disponível em: https://fnasjournals.com/index.php/FNAS-JSI/article/view/1101. Acesso em: 17 feb. 2026.