Duggal, S K <br/><br/>
Elements of environmental engineering 

 -   S Chand & Co. Ltd., New Delhi  1998 
 - 496 
<br/><br/><label>ISBN: </label>745 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Sanitary and municipal engineering, Environmental protection engineering
<br/><br/><label>Dewey Class. No.: </label>628  DUG-E