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 as fuel. 1 Petroleum as fuel -- Social aspects. 1 Petroleum as fuel -- Social aspects -- United States. 1 Petroleum chemicals industry. -- SEE: Petroleum industry and trade. 4 Petroleum conservation. 2 Petroleum engines -- SEE: Spark ignition engines. 2 Petroleum -- Environmental aspects -- Forecasting. 1 Petroleum -- Government policy -- Audio-visual materials. 1 Petroleum industry and trade. 4 SEE ALSO: Energy industries. 1 Petroleum industry and trade -- Alaska -- History. 1 10 20 30 50 100 per page < Previous 10 Headings Next 10 Headings >