Birbal Sahni Institute of Palaeobotanist <br/><br/>
The Palaeobotanist Vol 12 No 1-3 

 -  Birbal Sahni Inst, Lucknow 
 - pp 316;   25*18 
<br/><br/><label>Dewey Class. No.: </label>I:8m2,N52/N63.12/B07404