Sohnge, P.G. <br/><br/>
Geology And Archaeology Of Vaal River Basin 

 - Pretoria  Minister Of Mines  1937 
 - 190p.36plts 
 - GEOLOGICAL SURVEY MEMOIR NO. 35. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hv63
<br/><br/><label>Dewey Class. No.: </label>Hv63  / G7