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

Descrizione:

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

Aggiunto al nastro di tempo:

Historia de la Sostenibilidad

ByAndrés Calva

6 ott 2017

0

0

622

Data:

3 giug 1992 anni

Adesso

~ 33 years ago

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