Region
Europe, Eastern --
22
Europe, Eastern
9
Asia, Central --
5
Former Soviet republics --
4
Russia (Federation) --
4
Balkan Peninsula --
3
Communist countries --
2
Europe
2
Europe --
2
Asia
1
Asia --
1
Asia, Central
1
BalkanPeninsula --
1
China
1
China --
1
Developing countries --
1
East Asia
1
East Asia --
1
Europe, Central --
1
Europe,Eastern
1
Europe,Eastern --
1
Former Soviet republics
1
Latin America
1
Latin America --
1
Poland
1
Poland --
1
Soviet Union --
1
United States
1
United States --
1