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1 Jan 1987 Jahr - Montreal Protocol

Beschreibung:

Montreal Protocol signed to ensure the safety of the earth's ozone layer is signed in Montreal, Canada. The Protocol establishes international cooperation on the phase out of all ozone depleting substances, including the chlorofluorocarbon(CFC) refrigerants which have been used in HVAC equipment.

Zugefügt zum Band der Zeit:

11 Mär 2020
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Datum:

1 Jan 1987 Jahr
Jetzt
~ 38 years ago