MUHAMMAD, A. H.; HELAL, A. S. Effects of Occupational Exposure on Lung Function Tests in Old Process Plant Units workers, North Oil Company, Iraq. Journal of Petroleum Research and Studies, [S. l.], v. 8, n. 4, p. 16-27, 2021. DOI: 10.52716/jprs.v8i4.260. Disponível em: https://jprs.gov.iq/index.php/jprs/article/view/260. Acesso em: 5 dec. 2022.