OMENKA, O.; JERRY, I. T.; STEPHEN, O. M. Background radiation in plastic industry . African Journal of Medical and Health Development, [S. l.], v. 1, n. 1, 2023. Disponível em: https://journals.evonexpublishers.com/index.php/AJMHD/article/view/13. Acesso em: 1 may. 2026.