TY  - BOOK
AU  - 
AU  - Ley, Henry A.
TI  - Geology of natural gas
AV  - TN 880 .G46 1935
PY  - 1935///
CY  - Tulsa, Okla., London
PB  - The American association of petroleum geologists
KW  - Natural gas
KW  - Geology, Economic
N1  - Includes index
ER  -