Robert Leo Smith <br/><br/>
Elements of ecology. 
Robert Leo Smith 
 - ed. 4 
 -  An Imprint Of Addison Wesley Longman, Inc.  1988 
<br/><br/><label>ISBN: </label> 1648.64 
<br/><br/><label>Dewey Class. No.: </label>576.15SMI.N8