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7 ottob 1930 anni - Overhead Projector

Descrizione:

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

Aggiunto al nastro di tempo:

Edu 141 History of Technology Timeline

4 dic 2017

0

0

410

Data:

7 ottob 1930 anni

Adesso

~ 95 years ago

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