h.d kumar <br/><br/>
modern concepts of ecology 

 - newdelhi  vikas publishing huse pvt.ltd  1977 
<br/><br/><label>ISBN: </label>0-7069-3202-1 
<br/><br/><label>Subjects--Topical Terms: </label><br/>biology
<br/><br/><label>Dewey Class. No.: </label>H.D/M  / 574.5