Rana,S.V.S. <br/><br/>
Essentials of ecology and Environmental Science   

 - 3rd /   2007. 
 - Delhi:  Prentice Hall of India Pvt.Ltd.  2007. 
 - 536p:  24cm. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Environmental Science, Environment. 
<br/><br/><label>Dewey Class. No.: </label>574.52