Aditya Bhatnagar <br/><br/>
Protection of environment / 
Bhatnagar A. 
 - New delhi :  Oxford  book company ;  2010. 
 - 295 pages. 
<br/><br/>includes index. 
<br/><br/><label>ISBN: </label>9789350300015 
<br/><br/><label>LC Class. No.: </label>TD 170  / .B43 2010