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Propeller

https://www.wikidata.org/wiki/Q205451

Field Hierarchy

Parent
Engineering 24.4M papers	Geography 11.3M papers	Geology 9.3M papers	History 7.1M papers
Archaeology 6.4M papers	Oceanography 2.4M papers	Marine engineering 379k papers
Current
Propeller 21.1k papers
Child
Propulsor 3,260 papers

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History