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3 Jun 1992 Jahr - Se celebra la "Cumbre de la Tierra" de las Naciones Unidas en Rio de Janeiro

Beschreibung:

De esta cumbre surgen dos convenciones y se acuerdan las acciones a tomar como parte de la "Agenda 21".

Zugefügt zum Band der Zeit:

Historia de la Sostenibilidad

ByAndrés Calva

6 Okt 2017

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Datum:

3 Jun 1992 Jahr

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~ 33 years ago

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