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AIzaSyB4mHJ5NPEv-XzF7P6NDYXjlkCWaeKw5bc
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13 фев 1920 г. - Crystal Radio invented -Beginning of wireless communications
Добавлено на ленту времени:
comms
By
anirudh
9 окт 2017
0
0
546
Дата:
13 фев 1920 г.
Сейчас
~ 105 г назад
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