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| пишущий электромагнитный телеграф (In that same sketchbook Morse prototyped an electromagnetic recording telegraph and a dot-and-dash code system (a signaling alphabet). Maria Klavdieva) | |||
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| пишущий электромагнитный телеграф (In that same sketchbook Morse prototyped an electromagnetic recording telegraph and a dot-and-dash code system (a signaling alphabet). Maria Klavdieva) | |||