01194cam a22003011a 4500 gs 21000026 DLC 20260227111325.0 850906s1920 sa ab b f001 0 eng c gs 21000026 (OCoLC)12499895 U. S. Geological Survey. Library TxHR GU DLC premarc f-sa--- QE324 .A3 no. 15 Hall, Arthur Lewis, 1872- Corundum in the Northern and Eastern Transvaal / by A.L. Hall. Pretoria : Govt. Print. and Stationery Office, 1920. 223 p. : ill., maps ; 25 cm. Memoir ; no. 15 At head of title: Union of South Africa, Department of Mines and Industries, Geological Survey. Includes bibliographical references (p. [209]) and index. Published by authority of the Honourable the Minister of Mines and Industries. Corundum South Africa Northern Transvaal. Corundum South Africa Eastern Transvaal. Mines and mineral resources South Africa Transvaal. Memoir (Geological Survey (South Africa)) ; 15. 26060 26060