General ecology 
Krohne, David T. 
 - 2nd ed. 
 -  Cengage Learning Asia Pte Ltd.  2012 
 - 565 pages 
<br/><br/>
<br/><br/><label>ISBN: </label>978-9-81441062-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology.
<br/><br/><label>Dewey Class. No.: </label>577 K12 2012