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GEO Year Book 2007
(UNEP, 2007)
UNEP 2007 annual report
(UNEP, 2008)
UNEP Year Book 2009
(UNEP, 2009)
Tunza vol. 3 no. 3: biodiversity
(UNEP, 2006)
Tunza vol. 6 no. 2: food and the environment
(UNEP, 2008)
Tunza vol. 5 no. 3: technology and the environment
(UNEP, 2007)