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… Air Pollution The Parties to the present Convention, Determined to promote relations and cooperation in the field … long-range transport of air pollutants, Recognizing the contribution of the Economic Commission for Europe to the … Standard for ozone was set to aid management efforts nationally, and by jurisdictions, to significantly reduce the …

… and to formulate action plans and establish and implement nationally determined ambient air quality standards, taking into account … that it is not generally possible to distinguish the contribution of individual emission sources or groups of …