Minerals Yearbook 1990. Volume I: metals and minerals 
U.S. Bureau of mines. 
 - Washington  Government printing office  1990 
<br/><br/><label>Subjects--Corporate Names: </label><br/>U.S. Bureau of mines.
<br/><br/><label>Subjects--Topical Terms: </label><br/>minerales<br/>metales<br/>anuario
<br/><br/><label>Universal Decimal Class. No.: </label>549 (797) (058)