Greacen, Katherine Fielding,  1913-      , <br/><br/>
Silurian invertebrate fossils from Illinois in the Thomas A. Greene Memorial museum at Milwaukee-Downer college, 
compiled by Katherine F. Greacen and John R. Ball. 
 - [Milwaukee, Wis.,  1946] 
 - 61 p.  22 cm. 
 - Milwaukee-Downer college bulletin .
<br/><br/>Bibliography: p. 57-61. 
<br/><br/><label>LCCN: </label>gs 47000023  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Paleontology--Silurian.<br/>Paleontology--Illinois.
<br/><br/><label>LC Class. No.: </label>QE770  / .G7