Dr. R.K Gupta,  <br/><br/>
Encyclopeadia of:  Biology/ 

 - New Jersey  Prentice Hall  2001 
 - 810-1354 p.  25 cm. 
<br/><br/><label>ISBN: </label>8178840847 
<br/><br/><label>Nat. Bib. No.: </label> 
<br/><br/><label>Dewey Class. No.: </label>574.03  / GUE 2003