Verma, P.S. <br/><br/>
Environmental biology / 
P.S. Verma and V.K. Agarwal 
 - New Delhi:  S. Chand, 
 - 591p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Zoology
<br/><br/><label>Dewey Class. No.: </label>574.5  / VERE