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… for the Montreal Protocol on Substances that Deplete the Ozone Layer Ozone Secretariat Handbook for the Montreal … the ozone layer is healing. More than 99 percent of ozone-depleting substances have been phased out. As UN … Bali Declaration on Transitioning to Low Global Warming Potential Alternatives to Ozone Depleting Substances (2011)�� …

… Ozone Secretariat Eleventh edition (2018) Handbook for the … effects (UV-B) that reaches the Earth’s surface and the potential consequences for human health, for organisms, … the effects on the atmosphere of potential ozone layer depleting gases, other than the controlled substances, for …