Van Rensburg W C J <br/><br/>
Strategic minerals 

 -  1986 
 - p.  cm. 
<br/><br/><label>Standard No.: </label>45975 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Mineralogy<br/>Geology
<br/><br/><label>Dewey Class. No.: </label>H1.1, M6.1