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

 - 2 
 - New Delhi  Prentice Hall of India  2005 
<br/><br/><label>ISBN: </label>81-203-277-X 
<br/><br/><label>Dewey Class. No.: </label>574.5  / 1