Callenbach, Ernest <br/><br/>
Ecology: A pocket guide 

 -  Universities Press (India) Pvt. Ltd., Hyderabad  2004 
 - 154 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology; Biology
<br/><br/><label>Dewey Class. No.: </label>PG 574.5  CAL-E