Region
Soviet Union
3
Soviet Union --
3
China
2
China --
2
Cuba
2
Cuba --
2
Europe, Eastern
2
Europe, Eastern --
2
Asia
1
Asia --
1
Czech Republic
1
Czech republic --
1
Czechoslovakia
1
Czechoslovakia --
1
Eastern Europe
1
Romania
1
Romania --
1
Russia (Federation)
1
Russia (Federation) --
1
Slovakia
1
Slovakia --
1
Yugoslavia
1
Yugoslavia --
1