File:Learning curve example from WWII production in the US airframe industry.jpg

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	01:50, 24 July 2023		1,362 × 985 (504 KB)	Cosmia Nebula	Uploaded a work by US Army Air Forces, Air Force Materiel Command, Wright Field. from Source Book of World War II Basic Data - Airframe Industry. Volume 1. Direct Man-Hours - Progress Curves https://exhibits.stanford.edu/exemplars/catalog/dg041ny3484 with UploadWizard

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