ANNEGARN, H.J. SOURCE APPORTIONMENT AND THE UNITED STATES CLEAN AIR ACT. Clean Air Journal, [S. l.], v. 7, n. 2, p. 16–18, 1986. DOI: 10.17159/caj/1986/7/2.7354. Disponível em: https://cleanairjournal.org.za/article/view/7354. Acesso em: 25 apr. 2024.