Smith, Thomas M. <br/><br/>
Elements of ecology / 
Thomas M. Smith, Robert Leo Smith. 
 - 6th  ed. 
 - Boston :  Pearson,  2006. 
 - xxiv, 658  p. 
<br/><br/><label>ISBN: </label>0321410297 : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology.