00532nam a2200109Ia 4500080001800000245005500018260005900073300001000132520024900142583002100391650001000412 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