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27 март 1950 г. - Headphones

Описание:

Headphones and the idea that lessons could be learned through repetition gave rise to the 'language labs' - a practice that remains in use today.

Добавлено на ленту времени:

EME

ByDayanira Feliciano

14 ноя 2017

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565

Дата:

27 март 1950 г.

Сейчас

~ 75 г назад

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