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gningnin2: telephone
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gningnin2: Telegraph
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gningnin2: radio_SC00045
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gningnin2: Magnetic tapes
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gningnin2: Two Bell's telephone sets (1878)
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gningnin2: steno
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gningnin2: phono_stereo
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gningnin2: Wire recorder
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gningnin2: Greenwich Time Service - London
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gningnin2: Sub-marin cables
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gningnin2: Tactical_Intercom_DSC08042
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gningnin2: cite_de_la_musique_DSC05546
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gningnin2: cite_de_la_musique_DSC05545
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gningnin2: Army radio set
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gningnin2: DSC02724_Cinematheque