S.K.GARG <br/><br/>
ENVIRONMENTAL ENGINEERING ,SEWAGE DISPOSAL AND AIR POLLUTION ENGINEERING 

 - 16TH 
 - DELHI  KHANNA PUBLISHERS  1979 
<br/><br/><label>ISBN: </label>81-7409-057-6 
<br/><br/><label>Dewey Class. No.: </label>628.53  / 3