Synthetic oil

https://www.wikidata.org/wiki/Q902134

Field Hierarchy

Parent
Physics 31.7M papers	Materials science 18.2M papers	Quantum mechanics 13.1M papers	Art 12.6M papers
Geography 11.1M papers	Composite material 8.6M papers	Optics 7.9M papers	History 7M papers
Archaeology 6.3M papers		Visual arts 1.6M papers
Current
Synthetic oil 687 papers
Child

Trends

Notes

History