Pandey B P <br/><br/>
College botany     ; pteridophyta gymnosperms and palaeobotany Vol 2 

 - New Delhi  S. Chand & Co. Ltd.  1999 
 - 208p. 
 - Vol 2 .
<br/><br/><label>ISBN: </label>8121906016 
<br/><br/><label>Dewey Class. No.: </label>581 PANC