Clarke, J., P.A. Sobie, T.A. Wilkes, and P. Zweistra. “The Geology and Economic Evaluations of the Liqhobong Kimberlites, Lesotho”. International Kimberlite Conference: Extended Abstracts 7, no. 1 (April 17, 1998): 158–150. Accessed November 22, 2024. https://ikcabstracts.com/index.php/ikc/article/view/2667.