Oil shale

https://www.wikidata.org/wiki/Q221378

Field Hierarchy

Parent
Biology 36.7M papers	Engineering 25.6M papers	Geology 10.6M papers	Paleontology 5.6M papers
Waste management 1.6M papers
Current
Oil shale 64.6k papers
Child
Shale gas 9,815 papers	Unconventional oil 7,752 papers	Shale oil 6,818 papers	Tight oil 4,411 papers
Oil shale gas 1,597 papers	Shale oil extraction 1,512 papers	Shell in situ conversion process 1,216 papers	Green River Formation 1,144 papers
Synthetic crude 1,119 papers

Trends

Notes

History