Chopra, G L <br/><br/>
Classbook of pteridophyta 

 - 4 
 -  Hari Singh & Bros, Jullundur  1960 
 - 224 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pteridophyta; Botany
<br/><br/><label>Dewey Class. No.: </label>587  CHO-C4