Gopal, Brij <br/><br/>
Elements of ecology 

 - India  Vikas  1979 
 - vi,200 p.   
<br/><br/><label>ISBN: </label>0706909739 
<br/><br/><label>Subjects--Topical Terms: </label><br/>LIFE SCIENCE
<br/><br/><label>Dewey Class. No.: </label>574.5  / GOP