VASHISHTA,PC <br/><br/>
Botany For Degree Students. Part. 4 : Pteridophyta 

 - 5th Ed.  Reprint 
 -  S Chand & Company ( Pvt.) Limited ,  1993 
 - 509p 
<br/><br/><label>ISBN: </label>81-219-0828-0 
<br/><br/><label>Dewey Class. No.: </label>587  / VAS/B