Geographic Subject
Europe, Eastern
14
Balkan Peninsula
13
Soviet Union
8
Slavic countries
6
Europe, Central
3
Bosnia and Hercegovina
2
Bulgaria
2
Europe
2
Hungary
2
Yugoslavia
2
Black Sea Region
1
Bosnia and Hercegovina (Bosnia and Hercegovina : Federation)
1
Greece
1
Pripet Marshes (Belarus and Ukraine)
1
Romania
1
Russia
1
Russian Far East (Russia)
1
Serbia
1
Siberia (Russia)
1
Turkey
1