AMBASHT , R.S <br/><br/>
A TEXT BOOK OF ECOLOGY 

 - 14 ED 
 - INDIA  CBS BOOK PUB & DISTRIBUTOS  2002 
 - 8123908644 
<br/><br/><label>ISBN: </label>812390864 
<br/><br/><label>Dewey Class. No.: </label>581.7