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United Nations Environment Programme ,  [Handbook for the Vienna Convention for the Protection of the Ozone Layer (1985) - Eighth edition (2009)] ,  Handbook for the Vienna Convention for the Protection of the Ozone Layer (1985) - Eighth edition (2009)

South Asia Co-operative Environment Programme (SACEP) ,  [Guideline document on the status of Conventions and Protocols in the field of marine environment by South Asian Seas countries] ,  Guideline document on the status of Conventions and Protocols in the field of marine environment by South Asian Seas countries

United Nations Environment Programme ,  [The Green Customs Guide to Multilateral Environmental Agreements] ,  The Green Customs Guide to Multilateral Environmental Agreements

United Nations Environment Programme ,  [Handbook for the Montreal Protocol on Substances that Deplete the Ozone Layer - Eighth edition (2009)] ,  Handbook for the Montreal Protocol on Substances that Deplete the Ozone Layer - Eighth edition (2009)