Region
Europe
201
OECD countries
8
Russia (Federation)
6
Asia
5
Europa
4
Danube River Watershed
3
European Economic Community countries
2
Great Britain
2
Lithuania
2
Central Europe
1
Eastern Europe
1
Europe, Central
1
Europe, Eastern
1
European Community countries
1
European Union countries
1
Europese Unie
1
Hungary
1
Rissia (Federation)
1
Rusia (Federación)
1
United States
1