"Venugopala Rao, P" <br/><br/>
Textbook of Environmental Engineering 

 - \\200300ENGGPSX 
 - Phi Learning Pvt Ltd   2003  New Delhi  
 - 268p. 
<br/><br/> includes index and biblioraphy 
<br/><br/><label>ISBN: </label>8120319303