Greguss, Pal <br/><br/>
Xylotomy of the living Cycads :  with a description of their leaves and epidermis / 
Pál Gregus ; [transl. by Bálint Balkay]. 
 - Budapest :    Akadémiai K.,  1968. 
<br/><br/><label>Universal Decimal Class. No.: </label>581