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7 окт 1930 г. - Overhead Projector

Описание:

Device that projects an enlarged image of a transparency sheet placed on it onto a screen, board, or wall in the classroom.

Добавлено на ленту времени:

Edu 141 History of Technology Timeline

ByKiana Harris
4 дек 2017

Дата:

7 окт 1930 г.
Сейчас
~ 93 г назад
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