Analysis of the Efficiency of Hearing Protectors to Sound Pressure Levels Applied in Mechanical Manufacturing Processes of a PIM company (119-130). ITEGAM-JETIA, [S. l.], v. 4, n. 15, p. 119–130, 2018. Disponível em: https://itegam-jetia.org/journal/index.php/jetia/article/view/368. Acesso em: 23 oct. 2026.