Kumar, H.D. <br/><br/>
General ecology/H.D. Kumar 

 - New Delhi  Vikas Publishing House Pvt. Ltd.  1995 
 - 667p. 
<br/><br/><label>ISBN: </label>0-7069-9886-3 
<br/><br/><label>Dewey Class. No.: </label>574.5  K96G