Rana, S. V. S.  <br/><br/>
Essentials of ecology and environmental science / 
S. V. S. Rana 
 - 5th ed. 
 - New Delhi :  PHI Learning,  2015. 
 - xvii, 590 p.:  ill. ;  27 cm. 
<br/><br/>Includes bibliographical referrences and index. 
<br/><br/><label>ISBN: </label>9788120347861 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ECOLOGY
<br/><br/><label>Dewey Class. No.: </label>577  / RAN/E