International directory of mining / 
Engineering and mining journal 
 - volúmenes 
<br/><br/> 1982: charles v. richardson, general wanager ; george f. mielsen, editor-in-chief 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mineralogía<br/>Minas y riquezas minerales--Directorios
<br/><br/><label>LC Class. No.: </label>Z6736  / E53