Smith, Thomas M <br/><br/>
Elements of ecology 
/ by Thomas M. Smith and Robert Leo Smith 
 - 8th ed. 
 - New Delhi:  Pearson Education,  2012 
 - 612p. 
<br/><br/><label>ISBN: </label>9780321736079 
<br/><br/><label>Dewey Class. No.: </label>577  / SMI/E