VAN TIENHOVEN, M.; TERRY, B. The role of NACA in air quality management in South Africa. Clean Air Journal, [S. l.], v. 17, n. 2, 2009. DOI: 10.17159/caj/2009/17/2.7175. Disponível em: https://cleanairjournal.org.za/article/view/7175. Acesso em: 7 feb. 2023.