Rensburg, W.C.J. Van <br/><br/>
Strategic Minerals 
/by W.C.J. Van Rensburg 
 - New Jersey:  Prentice-Hall,  1986. 
<br/><br/><label>ISBN: </label>013851411901 
<br/><br/><label>Dewey Class. No.: </label>554  / REN/S