[South Africa 1:250,000 aeromagnetic and airborne radiometric surveys] [South Africa 1:250 000 lugnagnetiese en lugradiometriese opname] Prieska area Gebied Prieska
Geological Survey (South Africa) Geo-Mapping Services Ltd. (Johannesburg, South Africa); A.O.C. Technical Surveys (Johannesburg, South Africa)
Pretoria Government Printer 1976?
Disponible en IGC - Instituto de Geociências (MP M4-139 )(Obténgalo)