Rao, P  Venugopala. <br/><br/>
Environmental science and engineering /  
by P. Venugopala Rao. 
 - New Delhi :   Prentice-Hall of India Pvt. Ltd. ,   2006 
 - xii, 276p :  
<br/><br/><label>ISBN: </label>81-203-2893-0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental Science
<br/><br/><label>Dewey Class. No.: </label>G:55OaD  / P6