Geographic Subject
United States
60
India
24
Great Britain
19
Colombia
18
Turkey
18
China
15
France
15
Chile
14
Japan
14
Switzerland
12
Germany
10
Soviet Union
10
Europe
8
Germany (West)
8
Ecuador
7
Africa
5
Korea
5
Netherlands
5
Asia
4
Haiti
4
Haïti
4
Ireland
4
Italy
4
Russia (Federation)
4
Sweden
4
Bolivia
3
Canada
3
Estados Unidos
3
Germany (East)
3
Hawaii
3
Inde
3
Morocco
3
Pakistan
3
Peru
3
Thailand
3
Australia
2
Austria
2
Colombie
2
Costa Rica
2
Denmark
2
Developing countries
2
East Asia
2
Egypt
2
Hungary
2
Israel
2
Jammu and Kashmir
2
Jammu and Kashmir (India)
2
Latin America
2
Middle East
2
Navigation
2
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