Structure of typical American oil fields : a symposium of the relation of oil accumulation to structure / edited by J. V. Howell. - Oklahoma : American Association of Petroleum Geologists, c 1948. - Vols. : ill. ; 23 cm. Includes index. V. 3-- ; 327 327 Subjects--Topical Terms: Carbonaceous materials. Dewey Class. No.: 553.28206 / A35s