Propeller

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

Field Hierarchy

Parent
Engineering 23.9M papers	Geography 11.1M papers	Geology 9.1M papers	History 7M papers
Archaeology 6.3M papers	Oceanography 2.4M papers	Marine engineering 371k papers
Current
Propeller 20.8k papers
Child
Propulsor 3,220 papers

Trends

Notes

History