Oblast
Europe
19
United States
12
European Union countries
10
Europe, Eastern
8
Developing countries
7
Latin America
7
Germany
6
Great Britain
6
Soviet Union
5
China
4
Israel
4
Africa
3
Mexico
3
Poland
3
Argentina
2
Brazil
2
Czech Republic
2
Czechoslovakia
2
Iran
2
Italy
2
Korea (South)
2
Middle East
2
Russia (Federation)
2
Turkey
2
Andes Region
1
Arab countries
1
Asia, Central
1
Bangladesh
1
Belgium
1
Bolivia
1
Chile
1
Cuba
1
East Asia
1
Ecuador
1
Egypt
1
Eurasia
1
Europe, Central
1
European Economic Community countries
1
Finland
1
Former Soviet republics
1
France
1
Germany (East)
1
Hong Kong (China)
1
India
1
Ireland
1
Islamic countries
1
Kazakhstan
1
Korea (North)
1
Kosovo (Republic)
1
Kyrgyzstan
1
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