MAULA, F.; NAZ, G.; GHASSAN, M. Frequency of Coal Worker Pneumoconiosis in patients presented to Chest Out Patients Department. Pakistan Journal of Chest Medicine, [S. l.], v. 25, n. 1, p. 17–22, 2019. Disponível em: http://pjcm.net/index.php/pjcm/article/view/575. Acesso em: 13 aug. 2026.