Venugopala Rao, P. <br/><br/>
Principles of environmental science and engineering / 
P. Venugopala Rao 
 - New Delhi :  Prentice Hall,  2006 
 - xii, 276 p. :  ill. ;  24 cm. 
<br/><br/><label>ISBN: </label>9788120328938 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Environmental engineering<br/>Environmental sciences