Shale oil extraction

https://www.wikidata.org/wiki/Q3299156

Field Hierarchy

Parent
Biology 34.8M papers	Chemistry 28.4M papers	Engineering 23.9M papers	Organic chemistry 12.8M papers
Geology 9.1M papers	Ecology 7.8M papers	Paleontology 5.3M papers	Waste management 1.5M papers
Fossil fuel 99.4k papers		Petroleum 93.8k papers
Current
Shale oil extraction 1,350 papers
Child

Trends

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History