00614nam a2200145Ia 450000500170000008000180001724500550003526000590009030000100014952002490015958300210040865000100042994200120043999900170045120260716044135.0  a17.02.01 T971  aTwenty questions and answers about the ozone layer  bWorld Meteorological OrganizationaGenevaCHc2011March  a68 p.  aThis publication is a component of the 2010 report of the Montreal Protocol Scientific Assessment Panel, Scientific Assessment of Ozone Depletion: 2010.  The answers are based on the information presented in  the Assessment report in June 2010.  c3/14/19kEVELYND  aOZONE  cMmT971  c61295d61295