Geographic Subject
United States
162
Soviet Union
34
Great Britain
28
China
21
Russia
21
Germany
11
India
11
Turkey
10
Austria
9
France
8
Nicaragua
8
Japan
7
Mexico
6
Peru
6
Russia (Federation)
6
Egypt
5
Hungary
5
Indonesia
5
Iran
5
Latin America
5
Netherlands
5
Poland
5
Romania
5
États-Unis
5
Bolivia
4
Brazil
4
Czechoslovakia
4
Greece
4
Panama
4
Serbia
4
Yugoslavia
4
Afghanistan
3
Asia
3
Asia, Central
3
Caribbean Area
3
Central America
3
Colombia
3
Georgia (Republic)
3
Germany (West)
3
Italy
3
Liberia
3
Mongolia
3
Saudi Arabia
3
South Africa
3
Spain
3
Amérique centrale
2
Argentina
2
Balkan Peninsula
2
Berlin (Germany)
2
Bulgaria
2
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