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26 maio 1940 ano - Retroproyector

Descrição:

Este proyector era mas sencillo de manipular y mas eficaz para las clases.

Adicionado na linha do tempo:

Evolución tecnologica en las aulas

ByDayana Díaz López

1 nov 2018

0

0

548

Data:

26 maio 1940 ano

Agora

~ 85 years ago

Imagens:

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