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1 jul 2002 ano - UNESCO

Descrição:

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.

Adicionado na linha do tempo:

linea de tiempo red

Byjose ferney giraldo bañol
4 fev 2020
0
0
353

Data:

1 jul 2002 ano
Agora
~ 23 years ago
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