Rashid, A <br/><br/>
Introduction to pteridophyta: Diversity and differentiation 

 -  Vikas Publishing House Pvt Ltd, Delhi  1986 
 - 283 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pteridophyta; Botany
<br/><br/><label>Dewey Class. No.: </label>587  RAS-I