van Huyssteen, I., Mulidzi, A., Meyer, A. and Wooldridge, J. 2020. Alteration Index Three Facilitates Interpretation of β-Glucosidase, Acid-phosphatase and Urease Activities in Soils Irrigated with Diluted Winery Wastewater. South African Journal of Enology and Viticulture. 41, 2 (Nov. 2020), 238–244. DOI:https://doi.org/10.21548/41-2-4195.