Biswas, Chhaya <br/><br/>
The Gymnosperms 
Chhaya Biswas, B.M. Johri. 
 - New Delhi  Narosa Publishing  1997 
 - xxi,494p., ill.; 23cm. 
<br/><br/><label>ISBN: </label>81-7319-080-1. 
<br/><br/><label>Dewey Class. No.: </label>585  / B56G