Первый телеграф
В этот день 21 октября 1832 была Продемонстрирована работа первой в мире линии электромагнитного телеграфа
2 months ago 00:05:48 1
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5 months ago 00:08:35 3
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6 months ago 00:09:55 1
6 months ago 00:08:41 1
