Dahlgren, Bror Eric,  1877-1961. <br/><br/>
A fossil flower. 

 - Chicago,  Field museum of natural history,  1924. 
 - cover-title, 16 p.  illus., pl.  22 cm. 
 - Field museum of natural history. Botany leaflet 5 .
<br/><br/> Signed: B. E. Dahlgren. 
<br/><br/><label>LCCN: </label>cd 30000010  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Cycadaceae, Fossil.
<br/><br/><label>LC Class. No.: </label>QK1  / .F43 no. 5