KUMAR, H.D. <br/><br/>
MODERN CONCEPTS OF ECOLOGY 

 - 6th Ed. 
 - New Delhi  Vikas Publishing House Pvt. Ltd, New Delhi   1986 
<br/><br/><label>ISBN: </label>0 7069 3202 1 
<br/><br/><label>Dewey Class. No.: </label>577  / KUM/MO