TOPS

https://www.wikidata.org/wiki/Q835642

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Physics 31.7M papers	Chemistry 28.4M papers	Engineering 23.9M papers	Mathematics 21.1M papers
Materials science 18.2M papers	Composite material 8.6M papers	Optics 7.9M papers	Geometry 6.2M papers
Mechanical engineering 5.3M papers		Astronomy 2.5M papers
Current
TOPS 3,519 papers
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