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1 янв 1939 г. - Closed circuit television was first used for learning in Los Angeles public schools and at the State University of Iowa.

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By Wags05 at English Wikipedia (Own work) [Public domain], via Wikimedia Commons

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A Brief History of Educational Technology

18 сен 2017

Дата:

1 янв 1939 г.

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~ 85 г назад

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