Kotpal, R L  <br/><br/>
Concepts Of Ecology / 
R L Kotpal 
 - Delhi:  Vishal Publcations,  1989. 
 - 264p 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany
<br/><br/><label>Dewey Class. No.: </label>574.5  / KOT/C