Mahendra Kumar Mishra <br/><br/>
Paryavaran adhyayan / 
by Mahendra Kumar Mishra 
 - New Delhi :  Agni Prakasan,  2011. 
<br/><br/><br/>In Hindi 
<br/><br/><label>ISBN: </label>9788190482905 
<br/><br/><label>Subjects--Index Terms: </label>Biology Environment