WR HARDING; JC TAYLOR. Diatoms as indicators of historical water quality: A comparison of samples taken in the Wemmershoek catchment (Western Province, South Africa) in 1960 and 2008. Water SA, [S. l.], v. 40, n. 4 October, 2025. DOI: 10.4314/wsa.v40i4.4. Disponível em: https://watersa.net/article/view/21711. Acesso em: 10 may. 2025.