Region
Europe --
27
Europe
10
Central Europe --
4
Europe, Eastern --
3
Europe, Central --
2
Africa --
1
China --
1
Eastern Europe --
1
Eurasian Republic --
1
Europe, Eastern
1
European Economic Community countries
1
European Union countries --
1
German Empire - --
1
Germany - --
1
Malaysia
1
Middle East
1
Middle East --
1
Russia (Federation) --
1
Russia --
1
Soviet Union --
1
United States --
1