World of Surface mining underground 2015  International Fachzeitschrift fur den bergbau international journal of mining 

 - 1 
 - 6 
 - GDMB  Volume 1-3 .
<br/><br/><label>ISBN: </label>1613-2408 
<br/><br/><label>Dewey Class. No.: </label>622  / W 80