The pegmatite area south of the Orange river in Namaqualand /

By Gevers, Traugott Wilhelm,.
Pretoria : Government Printer, 1937 .
180 p., [17] leaves of plates : , At head of title: Union of South Africa. Department of Mines. | Map in portfolio has title: Geological map by T. W. Gevers on the pegmatite area south of the Orange river in Namaqualand. 25 cm..

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Tungsten ores in South Africa with special reference to Namaqualand and the Orange River.

By Joubert, G. K..
Pretoria, Govt. Printer, 1941 .
8 p. 24 cm..

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The pegmatite area south of the Orange river in Namaqualand /

Tungsten ores in South Africa with special reference to Namaqualand and the Orange River.