Morningstar, Helen,  1891- <br/><br/>
Pottsville fauna of Ohio. 

 - Columbus,  1922. 
 - 312 p.  pl., illus., maps  25 cm. 
 - Geological Survey of Ohio. Bulletin  no. 25 .
 - Bulletin (Geological Survey of Ohio) ;  no. 25. .
<br/><br/><label>LCCN: </label>gs 22000375  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Paleontology--Ohio.<br/>Paleontology--Carboniferous.
<br/><br/><label>LC Class. No.: </label>QE151  / .A18 no. 25 
<br/><br/><label>Gov. Doc. Class. No.: </label>ONR 84.3:25