CAMPBELL, K. The use of exhaust gas filters to reduce lead emissions from road vehicles. Clean Air Journal, [S. l.], v. 6, n. 3, 1983. DOI: 10.17159/caj/1983/6/3.7256. Disponível em: https://cleanairjournal.org.za/article/view/7256. Acesso em: 29 apr. 2024.