Chopra, G. L. <br/><br/>
A class book of :  Pteridophyta / 
G. L. Chopra. 
 - Lahore :  Unique Publishers,  1973. 
 - vi, 234pages :  illustrations ;  18 cm. 
<br/><br/><label>ISBN: </label> pbk. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany
<br/><br/><label>Dewey Class. No.: </label>587  / CHO