Search for: Title Author Subject Series Call number that begins with: 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings > Browse Headings # Petroleum -- Geology 6 SEE ALSO: Deep-earth gas theory 1 SEE ALSO narrower term: Oil field brines 2 SEE ALSO narrower term: Oil sands. 3 SEE ALSO narrower term: Oil well logging, Acoustic 1 Petroleum -- Geology -- Arctic regions. 1 Petroleum -- Geology -- Arctic regions -- Juvenile literature. 1 Petroleum -- Geology -- Atlantic Coast (U.S.) 1 Petroleum -- Geology -- Bibliography. 1 Petroleum -- Geology -- Cincinnati Arch. 1 Petroleum -- Geology -- Colorado. 1 Petroleum -- Geology -- Data processing 1 Petroleum -- Geology -- Illinois. 14 Petroleum -- Geology -- Illinois -- Bartelso Oil Field. 1 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings >