RT Journal Article SR Electronic(1) A1 du Pisani, P.YR 2007 T1 Borehole radar delineation of the Brakspruit regional pothole JF , VO OP SP cp-146-00034 DO https://doi.org/10.3997/2214-4609-pdb.146.10.2 PB European Association of Geoscientists & Engineers, SN 2214-4609, AB , UL https://www.earthdoc.org/content/papers/10.3997/2214-4609-pdb.146.10.2