IQBAL, M. N. Smog in Pakistan: Air Pollution and Respiratory Health Problems. PSM Biological Research, [S. l.], v. 7, n. 3, p. 114–116, 2022. Disponível em: https://psmjournals.org/index.php/biolres/article/view/688. Acesso em: 9 jul. 2026.