Vermiculite deposits in the Palaboroa area, N. E. Transvaal, by C. M. Schwellnus ... Publication of the Geological Survey Division.
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TextSeries: Geological series. Bulletin (South Africa. Geological Survey Division) ; no. 11.Publication details: Pretoria, The Government Printer, 1938.Description: 27 p. incl. illus. (maps) tables, diagrs. 24 cmSubject(s): LOC classification: - QE325 .A53 no. 11
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At head of title: ... Union of South Africa. Department of Mines.
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