Kaushik, Anubha and C.P. Kaushik <br/><br/>
Basics of Environment and Ecology 

 - 2nd rep. 
 - New Delhi  New age International Publishers  2014 
 - xiv, 208p. 
<br/><br/><label>ISBN: </label>9788122436419 
<br/><br/><label>Dewey Class. No.: </label>577  / KAU-ENV