Asthana, D.K. . <br/><br/>
Environment Problems & Solutions /  Textual Documents 
D.K. Asthana & Meera Asthana. 
 - 2nd ed / 
 - New Delhi :  S Chand & Co Ltd ,  2006. 
 - 434pg ;  24cm. 
<br/><br/><label>ISBN: </label>81-219-1654-2 
<br/><br/><label>Subjects--Index Terms: </label>Environment- Botany G- Botany 
<br/><br/><label>Dewey Class. No.: </label>590  / As 72 En