Region
Austria
1
Balkan Peninsula
11
Bosnia and Herzegovina
1
Bulgaria
3
Danube River
1
Europe
2
Europe, Central
1
Europe, Eastern
1
Europe, Western
2
Former Yugoslav republics
1
Greece
2
Griechenland
1
Italy
1
Mediterranean Region
1
Rhodope Mountains Region
1
Romania
2
Serbia
1
Slovenia
1
Turkey
2
Yugoslavia
4