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File:FritzPfleumer 1931 magnetic tape machine.jpg

FritzPfleumer_1931_magnetic_tape_machine.jpg(464 × 332 pixels, file size: 43 KB, MIME type: image/jpeg)

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current18:55, 4 March 2021Thumbnail for version as of 18:55, 4 March 2021464 × 332 (43 KB)Ccarlsson (talk | contribs)

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