Bhatnagar, Sushila <br/><br/>
Environmental biology / 
Sushila Bhatnagar. 
 - New Delhi :  Anmol Pub.,  2010. 
 - 295 p.:  22 cm. 
<br/><br/> Includes index 
<br/><br/><br/>English 
<br/><br/><label>ISBN: </label>978-81-261-4528-7 
<br/><br/><label>LC Class. No.: </label>574 B46e