Pandey, N., Misra, S.P. and Trivedi, P.S. <br/><br/>
Text Book of Botany 
Bryophyta, Pteridophya, Gymnosperms and Palaeobotany 
 - New Delhi  Vikas Publishing House Pvt Ltd  1972 
 - 492 
<br/><br/><label>ISBN: </label>0706923987 
<br/><br/><label>Publisher. No.: </label> Premier Book Shop 
<br/><br/><label>Subjects--Personal Names: </label> Botany 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Botany