Oil shale

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

Field Hierarchy

Parent
Biology 36M papers	Engineering 25M papers	Geology 10.4M papers	Paleontology 5.5M papers
Waste management 1.6M papers
Current
Oil shale 62.9k papers
Child
Shale gas 9,462 papers	Unconventional oil 7,606 papers	Shale oil 6,667 papers	Tight oil 4,273 papers
Oil shale gas 1,573 papers	Shale oil extraction 1,489 papers	Shell in situ conversion process 1,195 papers	Green River Formation 1,129 papers
Synthetic crude 1,112 papers

Trends

Notes

History