Berry, Edward Wilber,  1875-1945. <br/><br/>
The flora of the Ripley formation. 

 - Washington,  U.S.Govt.Print.Off.,  1925. 
 - iii,94p.  illus.XXIIIpl.,tables.  29cm. 
 - U.S. Geological survey.  Professional paper 136 .
<br/><br/> At head of title: Department of the Interior. 
<br/><br/>Bibliographical references. 
<br/><br/><label>LCCN: </label>gs 25000249  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Paleobotany--Cretaceous<br/>Paleobotany
<br/><br/><label>LC Class. No.: </label>QE75  / .P9 no. 136