Kupferbürger, Wilhelm,  1896- <br/><br/>
The travertine deposits near Port St. Johns, 
by W. Kupferburger ... 
 - Pretoria,  The Government printer,  1935. 
 - 15 p. incl. maps., diagr.  24 cm. 
 - South Africa. Geological Survey. Geological series. Bulletin,  no. 4 .
 - Geological Survey (South Africa).  Bulletin ;  no. 4. .
<br/><br/> At head of title: ... Union of South Africa. Department of mines.  Publication of the Geological survey division. 
<br/><br/><label>LCCN: </label>gs 35000170  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Winter.<br/>Mines and mineral resources--South Africa--Port St. Johns.
<br/><br/><label>LC Class. No.: </label>TN967  / .K85