Ozone 20+
Subtitle: special publication to mark 20th anniversary of National Ozone Unit
By: editor in chief, G.M.J.K. Gunawardana
Contributors: Sri Lanka. Ministry of Environment and Renewable Energy. National Ozone Unit
Publisher: National Ozone Unit, Ministry of Environment and Renewable Energy
Published: 2013
Place of publication: Battaramulla
Language: eng
Number of pages: 116
Other titles: Ozone twenty plus
Notes: Cover title.

English; includes articles in Sinhalese.