Synthetic oil

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

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Physics 33.6M papers	Materials science 19M papers	Art 14.6M papers	Quantum mechanics 13.6M papers
Geography 13.4M papers	Composite material 8.9M papers	Optics 8.2M papers	History 8.1M papers
Archaeology 7M papers		Visual arts 1.8M papers
Current
Synthetic oil 683 papers
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