Dorf, Erling <br/><br/>
Upper cretaceous floras of the Rocky mountain region 

 - Washington  Carnegie Institution of Washington Publication  1942 
 - 168p.  29cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Paleobotany
<br/><br/><label>LC Class. No.: </label>QTO QE924.D8