Das,R.C, <br/><br/>
Environmental Science Principles and Practice   

 - 1st /   2008. 
 - Delhi:  Prentice hall of India (P)Ltd.  2008. 
 - 532p:  24cm. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Environmental Science, Environment. 
<br/><br/><label>Dewey Class. No.: </label>574.52