Condra, Geo. E.  1869-1958. <br/><br/>
The stratigraphy of the Pennsylvanian system in Nebraska, 
by G. E. Condra. 
 - [Lincoln]  Printed by authority of the state of Nebraska [The University of Nebraska press]  1927. 
 - 291 [1] p. incl. illus., tables, diagrs.  23 cm. 
 - Nebraska.  Geological survey.  Bulletin I, 2d ser. .
 - Nebraska Geological Survey.  Bulletin ;  no. 1. .
<br/><br/>Bibliographical footnotes. 
<br/><br/><label>LCCN: </label>gs 28000226  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Stratigraphic--Pennsylvanian.<br/>Geology--Nebraska.
<br/><br/><label>LC Class. No.: </label>QE135  / .A4 no. 1