File:Vacuum tube hearing aid use 1933.jpg
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![File:Vacuum tube hearing aid use 1933.jpg](https://upload.wikimedia.org/wikipedia/commons/thumb/4/44/Vacuum_tube_hearing_aid_use_1933.jpg/800px-Vacuum_tube_hearing_aid_use_1933.jpg)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 02:27, 14 July 2014 | ![]() | 1,194 × 788 (190 KB) | commons>Chetvorno | User created page with UploadWizard |
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