Ihlseng, M.C. <br/><br/>
A manual of mining 

 - 4a ed. 
 - New York  John Wiley &amp; Sons  1905 
 - 723 p.  ilus. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>INGENIERIA DE MINAS<br/>MINERIA
<br/><br/><label>Universal Decimal Class. No.: </label>622(02)/I38