Verma Ps <br/><br/>
Biology for Class XI / 
Verma PsEy Bp 
 - New Delhi:  S. Chand,  2004. 
 - 1264p. 
<br/><br/><label>ISBN: </label>8121908191 
<br/><br/><label>LC Class. No.: </label>QH307.2  / .V522 2004