Aviation
The Challenge of Climate Change: Key Messages. Ministerial Session 2008
Summit Declaration,
28 May 2008
HERKES İÇİN ULAŞILABİLİRLİĞİN İYİLEŞTİRİLMESİ ÖRNEK UYGULAMA REHBERİ
Guidelines/User Guide,
1 January 2008