Fossil fuel

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

Field Hierarchy

Parent
Biology 36.7M papers	Chemistry 29.4M papers	Engineering 25.6M papers	Organic chemistry 13.1M papers
Ecology 8.3M papers		Waste management 1.6M papers
Current
Fossil fuel 103k papers
Child
Energy source 11.6k papers	Unconventional oil 7,752 papers	Shale oil 6,818 papers	Renewable fuels 5,845 papers
Coal liquefaction 4,673 papers	Oil and natural gas 2,013 papers	Midstream 1,789 papers	Oil shale gas 1,597 papers
Natural gas industry 1,543 papers		Shale oil extraction 1,512 papers

Trends

Notes

History