DUGGAL, K.N. <br/><br/>
ELEMENTS OF ENVIRONMENTAL ENGINEERING 

 - NEW DELHI  S. Chand Publishing  2009 
 - xvii+440p.,24x17Cms. 
<br/><br/><label>ISBN: </label>8121915473 
<br/><br/><label>Dewey Class. No.: </label>628 D866