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Thomas Edison - PowerPoint PPT Presentation

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Thomas Edison

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Thomas Edison. And the phonograph. By Erin. About the inventor. About the invention. The phonograph was completed August 12, 1887. ... – PowerPoint PPT presentation

Number of Views:822
Avg rating:3.0/5.0
Date added: 26 August 2009
Slides: 6
Added by: Username withheld or not provided
Learn more at: http://www.montgomeryschoolsmd.org
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