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14 out 1977 ano - Tbilisi (URSS)

Descrição:

Se acuerda la incorporación de la educación ambiental a los sistemas educativos, en las estrategias; modalidades y la cooperación internacional en materia de educación ambiental.

Adicionado na linha do tempo:

PNUMA

Byjesus
10 nov 2018
0
0
384

Data:

14 out 1977 ano
Agora
~ 48 years ago

Imagens:

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