TY  - BOOK
AU  - Condra,GeoE.
TI  - Deep wells of Nebraska,
T2  - Nebraska.  Geological survey.  Bulletin 4, second ser
AV  - QE135 .A4 no. 4
U1  - 553.28 
PY  - 1931///
CY  - [Lincoln]
PB  - Printed by authority of the state of Nebraska
KW  - Petroleum
KW  - Nebraska
KW  - Natural gas
N1  - At head of title: The University of Nebraska
ER  -