Duggal, K. N. <br/><br/>
Elements of environmental engineering / 
K. N. Duggal 
 - New Delhi :  S. Chand & Company,  1966 
<br/><br/>Includes references & indexes. 
<br/><br/><label>ISBN: </label>9788121915472 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental engineering
<br/><br/><label>Dewey Class. No.: </label>628  / DUG