01074cam a22002531  4500001001300000003000400013005001700017008004100034010001700075035001900092040005200111042001200163050002300175100004500198245013700243260004600380300005500426490007300481500007100554504003200625650001700657650005800674830008800732gs 40000174 DLC20260227111345.0810504s1938    sa ab        f000 0 eng c  ags 40000174   a(OCoLC)7389048  aU.S. Geol. Survey. LibrarycViBlbVdViBlbVdDLC  apremarc00aQE325b.A53 no. 111 aSchwellnus, C. M.q(Carl Martin),d1911-10aVermiculite deposits in the Palaboroa area, N. E. Transvaal,cby C. M. Schwellnus ... Publication of the Geological Survey Division.  aPretoria,bThe Government Printer,c1938.  a27 p.bincl. illus. (maps) tables, diagrs.c24 cm.1 aSouth Africa. Geological Survey. Geological series. Bulletinvno. 11  aAt head of title: ... Union of South Africa.  Department of Mines.  aBibliographical foot-notes. 0aVermiculite. 0aMines and mineral resourceszSouth AfricazTransvaal. 0aGeological series.  Bulletin (South Africa.  Geological Survey Division) ;vno. 11.