Ordovician Galena Group (Trenton) of Illinois
Subtitle: structure and oil fields
By: H. M. Bristol, T. C. Buschbach.
Contributors: Buschbach, T. C. 1923- joint author.
Series: Illinois petroleum ; 99
Publisher: Illinois State Geological Survey
Published: 1973
Place of publication: Urbana
Language: eng
Number of pages: 38
Subjects: Geology, Stratigraphic -- Ordovician.; Petroleum -- Geology -- Illinois.
Notes: Bibliography: p. 38.
Cover title.
At head of title: State of Illinois. Department of Registration and Education.