Wybergh, Wilfrid John,  1868- <br/><br/>
The coal resources of the Union of South Africa ... 

 - Pretoria,  The Government Printing and Stationery Office,  1922-28. 
 - 3 v.  illus., fold. plates (incl. maps, profiles) tables, diagrs.  25 cm. 
 - South Africa. Geological Survey. Memoir  no. 19, vol. I-III .
<br/><br/> At head of title: Union of South Africa. Dept. of mines and industries. 
<br/><br/>v. 1. The coal fields of Wilbank, Springs and Heidelberg, and of the Orange Free State. 1922.--v. 2. The inland coal fields of Natal. 1925.--v. 3. The coal fields of the eastern and south-eastern Transvaal, Springbok flats, Waterberg, Zoutpansberg and of the Cape Province. 1928. 
<br/><br/><label>LCCN: </label>gs 22000386  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Coal--South Africa.
<br/><br/><label>LC Class. No.: </label>QE324  / .A3