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jan 1, 1987 - Montreal Protocol

Description:

The Montreal Protocol on Substances that Deplete the Ozone Layer (a protocol to the Vienna Convention for the Protection of the Ozone Layer) is an international treaty designed to protect the ozone layer by phasing out the production of numerous substances that are responsible for ozone depletion.

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BySoughtout
29 Aug 2017
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Date:

jan 1, 1987
Now
~ 38 years ago

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