beacon: References & Edit History

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  • The Editors of Encyclopaedia Britannica
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Article History

Type Description Contributor Date
Invalidated site: How Stuff Works - Science - How Black Boxes Work. Dec 09, 2022
Add new Web site: How Stuff Works - Science - How Black Boxes Work. Oct 07, 2011
Media added. Aug 12, 2010
New article added. Feb 12, 2009
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