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31 Dez 1969 Jahr - THE HAND - HELD CALCULATOR

Beschreibung:

Se utilizó par facilitar la enseñanza de las matematicas en las escuelas.

Zugefügt zum Band der Zeit:

HISTORIA DE LA TECNOLOGIA EDUCATIVA JOHANA

Byjohana ruales tabla

30 Okt 2018

0

0

534

Datum:

31 Dez 1969 Jahr

Jetzt

~ 55 years ago

Abbildungen:

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