Clark, George <br/><br/>
Mining research. 

 - New York :  Pergamon Press,  1962. 
 - 2 v. :  il. ;  23 cm 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Minería
<br/><br/><label>Index Terms--Genre/Form: </label><br/>Libro
<br/><br/><label>Universal Decimal Class. No.: </label>622.001.2