Fossil fuel

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

Field Hierarchy

Parent
Biology 36.3M papers	Chemistry 29.5M papers	Engineering 25.1M papers	Organic chemistry 13.2M papers
Ecology 8.2M papers		Waste management 1.6M papers
Current
Fossil fuel 103k papers
Child
Energy source 11.3k papers	Unconventional oil 7,138 papers	Shale oil 6,285 papers	Renewable fuels 5,919 papers
Coal liquefaction 4,381 papers	Oil and natural gas 1,946 papers	Midstream 1,854 papers	Shale oil extraction 1,380 papers
Natural gas industry 1,380 papers		Oil shale gas 1,362 papers

Trends

Notes

History