SARKAR, S K <br/><br/>
MECHANISED LONGWALL MINING 

 - NEW DELHI  OXFORD & IBH  1998 
 - viii+240p.,24X16CMS. 
<br/><br/><label>ISBN: </label>81-204-1250-8 
<br/><br/><label>Dewey Class. No.: </label>622.33 S243