Fossil fuel

https://www.wikidata.org/wiki/Q12748

Field Hierarchy

Parent
Biology 36.8M papers	Chemistry 29.5M papers	Engineering 25.7M papers	Organic chemistry 13.2M papers
Ecology 8.3M papers		Waste management 1.6M papers
Current
Fossil fuel 103k papers
Child
Energy source 11.6k papers	Unconventional oil 7,775 papers	Shale oil 6,837 papers	Renewable fuels 5,858 papers
Coal liquefaction 4,674 papers	Oil and natural gas 2,017 papers	Midstream 1,795 papers	Oil shale gas 1,601 papers
Natural gas industry 1,545 papers		Shale oil extraction 1,514 papers

Trends

Notes

History