TY - BOOK AU - Swigart,Theodore Earl ED - United States. ED - Oklahoma. TI - Underground problems in the Comanche oil and gas field, Stephens County, Oklahoma, AV - TN872.O4 A5 1919 PY - 1919/// CY - [Washington?] KW - Petroleum KW - Oklahoma KW - Natural gas N1 - At head of title: Department of the Interior. Franklin K. Lane, secretary. Bureau of Mines. Van. H. Manning, director. In cooperation with the state of Oklahoma; Autographed from type written copy ER -