ZWI, S; GOLDMAN, H.I; KALLEBACH, J.M; DAVIES, J.C.A; BECKLAKE, M.R; REINACH, S.G. Respiratory health status of children in the Eastern Transvaal Highveld. Clean Air Journal, [S. l.], v. 8, n. 3, 1991. DOI: 10.17159/caj/1991/8/3.7303. Disponível em: https://cleanairjournal.org.za/article/view/7303. Acesso em: 2 may. 2024.