Vliegasverwydering deur middel van gruisbedfiltrasie. Clean Air Journal, [S. l.], v. 6, n. 8, 1985. DOI: 10.17159/caj/1985/6/8.7277. Disponível em: https://cleanairjournal.org.za/article/view/7277. Acesso em: 23 nov. 2024.