Vermeulen, DanieLorentz, SimonNgeleka, John Kalala2018-01-122018-01-122009-11http://hdl.handle.net/11660/7590enHydrogeology -- South Africa -- East LondonTomographyGroundwater -- PollutionNonaqueous phase liquidsDissertation (M.Sc. (Institute for Groundwater Studies))--University of the Free State, 2009Site characterisation for LNAPLs investigation using electrical resistivity tomography (ERT) surveyDissertationUniversity of the Free State