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Air pollution by ozone across Europe during summer 2011: Overview of exceedances of EC ozone threshold values for April–September 2011
(Publications Office of the European Union, 2012)
Air pollution by ozone across Europe during summer 2009: Overview of exceedances of EC ozone threshold values for April–September 2009
(Office for Official Publications of the European Union, 2010)
Air pollution by ozone across Europe during summer 2012: Overview of exceedances of EC ozone threshold values for April–September 2012
(Publications Office of the European Union, 2013)
Air pollution by ozone across Europe during summer 2010: Overview of exceedances of EC ozone threshold values for April–September 2010
(Publications Office of the European Union, 2011)