Condra, Geo. E.  1869-1958. <br/><br/>
Deep wells of Nebraska, 
by G. E. Condra. E. F. Schramm [and] A. L. Lugn. 
 - [Lincoln]  Printed by authority of the state of Nebraska,  1931. 
 - 288 p. incl. illus., maps, tables.  25 cm. 
 - Nebraska.  Geological survey.  Bulletin 4, second ser. .
 - Nebraska Geological Survey.  Bulletin ;  no. 4. .
<br/><br/> At head of title: The University of Nebraska. 
<br/><br/><label>LCCN: </label>gs 31000122  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum--Nebraska.<br/>Natural gas--Nebraska.
<br/><br/><label>LC Class. No.: </label>QE135  / .A4 no. 4 
<br/><br/><label>Dewey Class. No.: </label>553.28