Rana,S.V.S <br/><br/>
Essentials of ecology and environmental science/ 
S.V.S.Rana 
 - 4th ed. 
 - New Delhi :  PHI Learning,  2010. 
 - x, 568p. ;  24x16cm. 
<br/><br/><label>ISBN: </label>978-81-203-3894-4 :  Rs 295 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ECOLOGY
<br/><br/><label>Dewey Class. No.: </label>574.5  / RAN-ESS