Ruhmer, W.T.  <br/><br/>
Handbook on the estimation of metallurgical process costs / 
by W.T. Ruhmer. 
 - 2nd ed. 
 - Randburg :  Mintek,  1991. 
 - 175p. 
<br/><br/> special publication no. 14 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Metallurgical Processes.
<br/><br/><label>LC Class. No.: </label>TN 673 RUH 1991