C. du Preez, C. van Huyssteen, and P. Mnkeni, “Land use and soil organic matter in South Africa 1: A review on spatial variability and the influence of rangeland stock production”, S. Afr. J. Sci., vol. 107, no. 5/6, p. 8 pages, May 2011, Accessed: Nov. 22, 2024. [Online]. Available: https://sajs.co.za/article/view/10032