ARIF, M. M.; AHMAD, S. R.; KHAN, S. M. Measurement of noise levels: an observational study in engineering laboratories. Journal of the Pakistan Institute of Chemical Engineers, [S. l.], v. 47, n. 2, p. 09–14, 2020. DOI: 10.54693/piche.04722. Disponível em: http://www.piche.org.pk/journal/index.php/jpiche/article/view/440. Acesso em: 10 may. 2024.