Anandan, P. and Kumaravelan, R.  <br/><br/>
Principles of environmental engineering / 

 - New Delhi,   Scitech Publications,  c2005. 
 - I-6 p. ;  ill. ;  24 cm.  
<br/><br/><label>ISBN: </label>8188429473 
<br/><br/><label>Dewey Class. No.: </label>628.2