Region
Europe, Eastern
259
Russia (Federation)
156
Former Soviet republics
67
Europe, Central
47
Europe
40
Soviet Union
34
Hungary
30
China
29
Former communist countries
29
Poland
27
Romania
22
Asia, Central
19
United States
19
Ukraine
15
Germany
12
Germany (East)
11
Asia
10
Bulgaria
10
Balkan Peninsula
9
Communist countries
9
Czech Republic
9
Kyrgyzstan
7
Slovakia
7
Latvia
6
Albania
5
Baltic States
5
Belarus
5
Czechoslovakia
5
Georgia (Republic)
5
Russia
5
Cuba
4
Developing countries
4
European Union countries
4
Former Yugoslav republics
4
Saint Petersburg
4
Estonia
3
Eurasia
3
Germany (West)
3
Latin America
3
Mongolia
3
Moscow
3
Moscow (Russia)
3
Serbia
3
Turkey
3
Uzbekistan
3
Yugoslavia
3
Africa
2
Ajaria
2
Ajaria (Georgia)
2
Aral Sea Watershed (Uzbekistan and Kazakhstan)
2
more ...