File:Components of the electromechanical telegraph network. Proce Wellcome V0025510.jpg
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current | 03:50, 3 November 2014 | 3,300 × 2,174 (4.05 MB) | Fæ | =={{int:filedesc}}== {{Artwork |artist = |author = |title = Components of the electromechanical telegraph network. Proce |description = Components of the electromechanical telegraph network. Process print. <p... |
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