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1 janv. 1987 - the Montreal treaty was created

Description:

the Montreal treaty was an international treaty
designed to protect the ozone layer

Ajouté au bande de temps:

environmental time line

Byessey ephrem
14 oct. 2017
0
0
277

Date:

1 janv. 1987
Maintenaint
~ Il y a 37 ans
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