SINGH, J.G. <br/><br/>
UNDERGROUND COAL MINING METHODS 

 - VARANASI  BRAJ-KALPA  2000 
 - viii+538p.,23X18Cms. 
<br/><br/><label>ISBN: </label>81-7525-204-9 
<br/><br/><label>Dewey Class. No.: </label>622.2 S617