du Preez, Gerhard C., Hendrika Fourie, Mieke S. Daneel, and Victor Wepener. “Application of a Soil Quality Triad in Assessing Ecological Risk Posed to Croplands”. South African Journal of Science 117, no. 7/8 (July 29, 2021). Accessed November 22, 2024. https://sajs.co.za/article/view/8280.