LLOYD, S. Air pollution control - today and towards the next century. Clean Air Journal, [S. l.], v. 6, n. 3, 1983. DOI: 10.17159/caj/1983/6/3.7255. Disponível em: https://cleanairjournal.org.za/article/view/7255. Acesso em: 29 mar. 2024.