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15 maio 1922 ano - Радио в обучении

Descrição:

Одним из первых университетов, внедривших радио в обучении, был Государственный Университет Пенсильвании, который начал свое вещание в 1922 году

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ByЕвгения
17 set 2018

Data:

15 maio 1922 ano
Agora
~ 102 years ago
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