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14 Okt 1977 Jahr - Tbilisi (URSS)

Beschreibung:

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.

Zugefügt zum Band der Zeit:

PNUMA

Byjesus
10 Nov 2018
0
0
373

Datum:

14 Okt 1977 Jahr
Jetzt
~ 48 years ago

Abbildungen:

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