Nondlazi, S., Ngqwala, N., Zuma, B. M. ., Mensah, P. K., & Tandlich, R. . (2019). Effect of fly ash-lime treatment on the acute toxicity of greywater towards Daphnia magna. Nova Biotechnologica Et Chimica, 18(1), 59–65. https://doi.org/10.2478/nbec-2019-0008