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Handbook of The Vienna Convention for the Protection of the Ozone Layer
… scientific knowledge of the ozone layer and possible adverse effects resulting from its modification, Determined … to protect human health and the environment against adverse effects resulting from modifications of the ozone … to the Depositary. 3. Any such withdrawal shall take effect upon expiry of one year after the date of its receipt …
Handbook for the Montreal Protocol on Substances that Deplete the Ozone Layer
… to protect human health and the environment against adverse effects resulting or likely to result from human … the ozone layer in a manner that is likely to result in adverse effects on human health and the environment, … and consumption of those substances in 1986; with effect from 1 January 1993, the twelve-month control period …