Meenakshi, P. <br/><br/>
Elements of environmental science and engineering / 
P. Meenakshi. 
 - 2ed. 
 - Delhi :  PHI Learning.  c2014 
<br/><br/><label>ISBN: </label>9788120345232 
<br/><br/><label>Dewey Class. No.: </label>628  / M479e