Kotpal,R.L. And Bali, N.P. <br/><br/>
Concepts of ecology / 
Kotpal,R.L. And Bali, N.P. 
 -  Vishal Publications 
 - 264p 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zoology
<br/><br/><label>Dewey Class. No.: </label>591.5  / KOTC