The current situation in air pollution control by local authorities. Clean Air Journal, [S. l.], v. 2, n. 1, p. 2–8, 1974. DOI: 10.17159/caj/1974/2/1.7390. Disponível em: https://cleanairjournal.org.za/article/view/7390. Acesso em: 13 nov. 2024.