REVADI, Chindy E; RASYIDI, M. Sazli; MARGARETTA, Cinthya; ZIKRI, Khairullah. Noise Exposure Analysis and Hearing Conservation in the CPO Industry of North Sumatra: A Case Study on Noise Mapping Techniques. Simetrikal: Journal of Engineering and Technology, [S. l.], v. 3, n. 1, p. 19–28, 2024. DOI: 10.32734/jet.v3i1.13584. Disponível em: https://talenta.usu.ac.id/jet/article/view/13584. Acesso em: 6 oct. 2026.