VERMA (P S) <br/><br/>
Concepts of ecology: environmental biology. 

 - ND  S. Chand & Co. Ltd.  1999 
 - vii,264 
<br/><br/><label>ISBN: </label>81 219 1681 X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecology environmental biology
<br/><br/><label>Dewey Class. No.: </label>574.5 VERC