Kumar, H.D. <br/><br/>
Modern concepts of ecology 

 - 7th ed. 
 - New Delhi  Vikas Pub.  1992 
 - x,377 p. 
<br/><br/><label>ISBN: </label>0706986768 
<br/><br/><label>Dewey Class. No.: </label>574.5  / KUM