GARLAND, R.; WERNECKE, B.; FEIG, G.; LANGERMAN, K. The new WHO Global Air Quality Guidelines: What do they mean for South Africa?. Clean Air Journal, [S. l.], v. 31, n. 2, 2021. DOI: 10.17159/caj/2020/31/2.12915. Disponível em: https://cleanairjournal.org.za/article/view/12915. Acesso em: 28 mar. 2024.