Chadha, S. K <br/><br/>
Himalayan ecology 

 - New Delhi  Ashish Publishing House  1989 
 - xii, 169p. 
<br/><br/><label>ISBN: </label>8170242339 
<br/><br/><label>Subjects--Index Terms: </label>Environmental awareness 
<br/><br/><label>Universal Decimal Class. No.: </label>349.6(540):502.12  / CHA'89