Synthetic oil

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

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Physics 33M papers	Materials science 18.5M papers	Art 14.4M papers	Quantum mechanics 13.3M papers
Geography 13.2M papers	Composite material 8.7M papers	Optics 8.1M papers	History 8M papers
Archaeology 6.9M papers		Visual arts 1.8M papers
Current
Synthetic oil 670 papers
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