Mills, S. C., & Grab, S. W. (2005). Debris ridges along the southern Drakensberg escarpment as evidence for Quaternary glaciation in southern Africa. Quaternary International, 129(1), 61-73. doi:10.1016/j.quaint.2004.04.007
Mills, S. C., & Grab, S. W. (2005). Debris ridges along the southern Drakensberg escarpment as evidence for Quaternary glaciation in southern Africa. Quaternary International, 129(1), 61-73. doi:10.1016/j.quaint.2004.04.007