Search for: Title Author Subject Series that begins with: 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings > Browse Headings # Bitumen 1 SEE ALSO narrower term: Asphaltene 1 Bitumen -- Geology -- Oklahoma. 1 Bituminous coal 1 Bituminous coal industry -- Pennsylvania -- Somerset Region. 1 Bituminous coal industry -- West Virginia -- History -- 20th century. 1 Bituminous coal -- Periodicals. 1 Bituminous materials -- SEE ALSO narrower term: Asphalt 5 Bituminous materials -- Texas. 1 Bituminous materials -- TEXAS -- DALLAS-FATIGUE. 1 Bituminous sand -- SEE: Oil sands 6 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings >