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23 Dez 1969 Jahr - En primaria se efectuó una reforma curricular y se elaboraron nuevos libros de texto; se aprobó también una nueva Ley Federal de Educación Superior.
Zugefügt zum Band der Zeit:
M4.1_Educación especial
By
Marley Bustamante
9 Nov 2018
1
0
493
Datum:
23 Dez 1969 Jahr
Jetzt
~ 55 years ago
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