Regione
Soviet Union
28
Russia (Federation)
5
United States
3
Asia
2
Canada
2
Mexico
2
Poland
2
Africa
1
Apatity (Russia)
1
Baikal Lake Region
1
Balkan Peninsula
1
Baltic States
1
Bulgaria
1
China
1
India
1
Indonesia
1
Italy
1
Karelia
1
Latvia
1
Netherlands
1
Portugal
1
Slavic countries
1
Tajikistan
1
Turkey
1
Warsaw (Poland)
1