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

 - 7 
 -  Vikas Publishing House Pvt. Ltd., New Delhi  1992 
 - 377 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology; Biology
<br/><br/><label>Dewey Class. No.: </label>PG 574.5  KUM-M7