Aeromagnetic and airborne radiometric surveys = Lugmagnetiese en lugradiometriese opnames.
Geological Survey (South Africa)
Pretoria : Govt. Printer,
[1975]-
"This 1:250 000 aeromagnetic map, compiled from the 1:50 000 sheets, is obtainable on both transparent polyester and on paper."
Includes locality map and index to 1:50 000 aeromagnetic/air-radiometric maps.
Some maps issued on two sheets titled: Aeromagnetic survey/Lugmagnetiese opname ; and Airborne radiometric survey/Lugradiometriese opname.
A few sheets only.
Kenhardt area : Aeromagnetic survey (2 copies, 1 trans. & 1 paper) -- Pofadder area (2 sheets) Aeromagnetic survey & Airborne radiometric survey -- Prieska area (1 sheet) Aeromagnetic and Airborne radiometric survey -- Warmbad area (2 maps on 1 sheet)
Geomagnetism
Magnetic anomalies
Radioactive prospecting