Yadav, P. R  Mishra, Subhrata R <br/><br/>
Environmental ecology 

 - New Delhi  Discovery Publishing House  2004 
 - 356p. 
<br/><br/><label>ISBN: </label>8171417531 
<br/><br/><label>Subjects--Index Terms: </label>Environmental ecology 
<br/><br/><label>Universal Decimal Class. No.: </label>349.6  / YAD'04