Geographic Subject
Soviet Union
30
Sweden
23
Netherlands
10
Russia (Federation)
10
India
5
United States
5
Switzerland
4
4.050
3
Developing countries
3
Europe, Eastern
3
Finland
3
Germany (West)
3
Singapore
3
China
2
Great Britain
2
Kenya
2
Malaysia
2
Norway
2
4.020
1
4.480
1
6.510
1
6.675
1
Asia
1
Asia, Central
1
Belgium
1
Brazil
1
Chile
1
Colombia
1
Dagestan (Russia)
1
Ecuador
1
Egypt
1
Equateur
1
European Union countries
1
Georgia (Republic)
1
Germany (East)
1
Jamaica
1
Japan
1
Karelia (Russia)
1
Korea
1
Mexico
1
Morocco
1
North America
1
Pays socialistes
1
Pays-Bas
1
Santiago
1
Scandinavia
1
South Africa
1
Spain
1
Sri Lanka
1
Suède
1
more ...