Message of the Secretary-General on International Day for the Preservation of the Ozone Layer, 16 September 2009 [Arabic] [Chinese] [English] [French] [Russian] [Spanish]
Invitation letter to governments to commemorate the International Day for the Preservation of the Ozone Layer - EnglishFrenchSpanish
Backgrounder. An
excellent overview of the Montreal Protocol's progress to-date, including
basic facts and data on the science and politics of ozone protection.