- Union of South Africa. Mines Department. Annual Reports for 1911. Part III Geological Survey.

. Book, Pretoria. Government Printing and Stationary Office. 1912. 27 x 22 cm. 111, ii pages, XIV plates, whereof photos + large folding map; Portion of Rustenburg Districht ( 2x ) + map of the Province of Transvaal, area of work completed. Wrappers with serious wear . Owner's entry. KEYWORDS: South Africa. geology.

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