// todo need optimize like in event.jsp. Add indexing or not indexing this page. Declaration of the United Nations Conference on the Human Environment (5 mayo 1972 año – 15 mayo 1972 año) (Cinta de tiempo)

Declaration of the United Nations Conference on the Human Environment (5 mayo 1972 año – 15 mayo 1972 año)

Descripción:

Stockholm Conference takes place and 26 principles are developed.

Añadido al timeline:

Contemporary history

ByCarla

30 nov 2018

fecha:

5 mayo 1972 año

15 mayo 1972 año

~ 10 days

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