مجموعة البيانات المجموعات جدول النشاط المتتابع المجموعات Albania UNESCO member since 1958 Croatia UNESCO member since 1992 Greece UNESCO member since 1946 Groundwater Sustainability and Water Cooperation (GSW) Datasets uploaded by the Groundwater Sustainability and Water Cooperation (GSW)... Montenegro UNESCO member since 2007 Russian Federation UNESCO member since 1954 Serbia UNESCO member since 2000
