Knowlton, F. H. <br/><br/>
A fossil flora from the frontier formation of southwestern wyoming. 

 - Washington  Government Printing Office  1917 
 - pp. 73-107 
<br/><br/> Impreso 
<br/><br/><br/>Ingles 
<br/><br/><label>Subjects--Topical Terms: </label><br/>MINERIA