Asthana, D. K., <br/><br/>
Environment : Problems  &  Solutions 

 - 1st /   2010. 
 - Delhi:  S. Chand  &  Company Limited,  2010. 
 - 428p. 
<br/><br/><label>Subjects--Personal Names: </label><br/>Botany, Plants (Botany). 
<br/><br/><label>Dewey Class. No.: </label>580