File:Detail showing Bell's liquid transmitter in a drawing by P.D. Richards of the experiments in early 1873.jpg
Detail_showing_Bell's_liquid_transmitter_in_a_drawing_by_P.D._Richards_of_the_experiments_in_early_1873.jpg (359 × 300 pixels, file size: 17 KB, MIME type: image/jpeg)
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current | 17:28, 22 November 2014 | 359 × 300 (17 KB) | Heritager | User created page with UploadWizard |
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