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oct 14, 1977 - Tbilisi (URSS)

Description:

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.

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PNUMA

Byjesus
10 Nov 2018
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Date:

oct 14, 1977
Now
~ 48 years ago

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