RASHID, A <br/><br/>
An introduction to pterdophyta: Diversity, Development, Differntiation 

 - 2nd rev. 
 - New delhi  Vikas publishing house (p) Lt  d.         1999 
 - x, 426p 
<br/><br/><label>ISBN: </label>81-259-0709-2 
<br/><br/><label>Dewey Class. No.: </label>587