Singh, Sanjay Kumar. <br/><br/>
Pteridophyta 

 - New Delhi  Campus Books International  2008 
 - 291p. 
<br/><br/><label>ISBN: </label> RS 825.00 
<br/><br/><label>Source: </label> RS 825.00 
<br/><br/><label>Dewey Class. No.: </label>587 SIN