Sharma, O P. <br/><br/>
Pteridophyta /  
O P Sharma. 
 - 2nd ed /   . 
 - New Delhi :   Macmillan India ,   2006. 
 - xiv,374p. :   ills.,picts.,tables ;   18cm .  
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>9781403930309  Rs. 295.00 
<br/><br/><label>Subjects--Index Terms: </label>PTERIDOPHYTA  
<br/><br/><label>Dewey Class. No.: </label>587  / SHA/P