Birbal Sahni Institute of Palaeobotany <br/><br/>
The Palaeobotanist Vol 7 1- 2 

 -  Birbal Sahni Inst, Lucknow 
 - pp 159;   25*18 
<br/><br/><label>Dewey Class. No.: </label>I:8m2/N58.7/B07399