Contamination of Toxic Heavy Metal in Locally Made Plastic Food Packaging Containers. Global Journal of Science Frontier Research, [S. l.], v. 15, n. B1, p. 19–23, 2015. Disponível em: https://www.journalofscience.org/index.php/GJSFR/article/view/1482. Acesso em: 5 feb. 2026.