DR. GUPTA K M. <br/><br/>
ENERGY, ENVIRONMENT AND ECOLOGY  3RD ED.  ENGLISH 
AUTHOR 
 - 3RD.ED.  UMESH 
 - DELHI  UMESH  2012 
 -  3RD ED. 363 PP.  PAPERBACK 
<br/><br/><label>LC Class. No.: </label>671.012GUP  / 196 
<br/><br/><label>Dewey Class. No.: </label>671.105GUP  / 196