a textbook of plant physiology biochemistry and biotechnology 
 plant physiology 
s.k. verma mohit verma 
 - new delhi  S. chand and company ltd.  1995c 
 - various pages 
<br/><br/><label>ISBN: </label>81-219-0627-x 
<br/><br/><label>Dewey Class. No.: </label>571.2