[South Africa 1:250,000 aeromagnetic and airborne radiometric surveys] [South Africa 1:250 000 lugnagnetiese en lugradiometriese opname] Piet Retief area Gebied Piet Retief
Geological Survey (South Africa) MapStudioProductions, pty. ltd; Aero Service Corporation
Pretoria Government Printer 1975?
Localização:
IGC - Instituto de Geociências
(MP M4-277 )(Acessar)
Department of Mines, Geological Survey, Union of South Africa Departement Van Mynwese, Geologiese Opname, Unie van Suid-Afrika Balfour 2628D Standerton 2629C Balfour 2628D Standerton 2629C
Geological Survey (South Africa) Louis T Nel 1895- (Louis Taylor); A. W Rogers 1872-1946 (Arthur William); A. P. A Steyn; A. J Besaans; Trigonometrical Survey (South Africa); MapStudioProductions, pty. ltd
Pretoria Printed by the Government Printer 1971
Localização:
IGC - Instituto de Geociências
(MP M4-92 )(Acessar)