Delevoryas, Theodore <br/><br/>
Morphology and evolution of fossil plants 

 -  Holt Rinehart & Winston Publishers, New York  1966 
 - 189 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Paleobotany
<br/><br/><label>Dewey Class. No.: </label>PG 561  DEL-M