Verma, P.S. <br/>
Environmental biology : principles of ecology. 

 - New Delhi  S.Chand and Company.  2001 
 - 21 cm.  591 page  1  21 cm. 
<br/><br/><label>ISBN: </label>81-219-0859-0 
<br/><br/><label>Standard No.: </label> Available 
<br/><br/><label>Source: </label> Available 
<br/><br/><label>Subjects--Personal Names: </label>
<br/><br/><label>Subjects--Topical Terms: </label>
<br/><br/><label>Dewey Class. No.: </label>577 VEE