Verma, P.S. Pendey, B.P. <br/><br/>
A Text Book of Biology. 

 - 4th Ed. 
 - New Delhi :  S. Chand & Company (PVT) LTD,  1988. 
 - v, 378 p. 
<br/><br/><label>Dewey Class. No.: </label>574  / VER