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16 sett 1986 anni - Montreal protocol

Descrizione:

Montreal protocol is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion.

Aggiunto al nastro di tempo:

Environmental Movement

ByDan Dissell
8 set 2017
2
0
2112

Data:

16 sett 1986 anni
Adesso
~ 39 years ago
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