World mineral statistics. Comp by C D G Black etc 

 - London  H M S O UK       
 -  1972-76 .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Minings
<br/><br/><label>Dewey Class. No.: </label>X9(HZ).1.1.N76<--N72s, L9