Rao, P. Venugopala. <br/><br/>
Textbook of environmental engineering / 
Rao, P. Venugopala. 
 - New Delhi  Prentice-Hall inc.  2003 
<br/><br/><label>ISBN: </label>8120319303 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental
<br/><br/><label>Dewey Class. No.: </label>628  / RAO