Joubert, G. K.  1903- <br/><br/>
Tungsten ores in South Africa with special reference to Namaqualand and the Orange River. 

 - Pretoria,  Govt. Printer,  1941. 
 - 8 p.  fold. map.  24 cm. 
 - South Africa. Dept. of Mines. Geological series. Bulletin  no. 13 .
 - South Africa.  Geological Survey.  Geological series. Bulletin  no. 13. .
<br/><br/><label>LCCN: </label>gs 50000047  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Tungsten ores--South Africa.
<br/><br/><label>LC Class. No.: </label>QE325  / .A53 no. 13 
<br/><br/><label>Dewey Class. No.: </label>553.46