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jul 1, 2002 - UNESCO

Description:

Los recursos educativos de libre acceso son materiales de enseñanza, aprendizaje o investigación que se encuentran en el dominio público o que han sido publicados con una licencia.

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Byjose ferney giraldo bañol
4 Feb 2020
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Date:

jul 1, 2002
Now
~ 23 years ago
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