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27 март 1930 г. - Overhead Projector

Описание:

Initially used by the U.S military for training purposes in WWII, overhead projectors quickly spread to schools and other organizations around the country.

Добавлено на ленту времени:

EME

ByDayanira Feliciano
14 ноя 2017
0
0
565

Дата:

27 март 1930 г.
Сейчас
~ 95 г назад

Изображения:

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