01165cam a22002891a 4500001001300000003000400013005001700017008004100034010001700075035002000092040005200112042001200164043001200176050002200188100003100210245006800241260005900309300003500368490002100403500010000424504006200524500008300586650004800669650004700717650005800764830005300822gs 21000026 DLC20260227111325.0850906s1920    sa ab    b   f001 0 eng c  ags 21000026   a(OCoLC)12499895  aU. S. Geological Survey. LibrarycTxHRdGUdDLC  apremarc  af-sa---00aQE324b.A3 no. 151 aHall, Arthur Lewis,d1872-10aCorundum in the Northern and Eastern Transvaal /cby A.L. Hall.  aPretoria :bGovt. Print. and Stationery Office,c1920.  a223 p. :bill., maps ;c25 cm.1 aMemoir ;vno. 15  aAt head of title: Union of South Africa, Department of Mines and Industries, Geological Survey.  aIncludes bibliographical references (p. [209]) and index.  aPublished by authority of the Honourable the Minister of Mines and Industries. 0aCorundumzSouth AfricazNorthern Transvaal. 0aCorundumzSouth AfricazEastern Transvaal. 0aMines and mineral resourceszSouth AfricazTransvaal. 0aMemoir (Geological Survey (South Africa)) ;v15.