DIE BEHEER VAN BRANDSTOVERBRUIKENDE TOESTELLE KLEINER AS 10 TON/UUR. Clean Air Journal, [S. l.], v. 8, n. 1, p. 3–7, 1990. DOI: 10.17159/caj/1990/8/1.7191. Disponível em: https://cleanairjournal.org.za/article/view/7191. Acesso em: 23 nov. 2024.