Geographic Subject
United States
10
China
4
Great Britain
4
Soviet Union
3
Asia
2
France
2
India
2
Africa
1
Amérique centrale
1
Argentina
1
Australia
1
Belgium
1
Burma
1
Canada
1
Denmark
1
Europe
1
Germany
1
Greece
1
Hungary
1
Middle East
1
Netherlands
1
New Zealand
1
Nicaragua
1
Ostmitteleuropa
1
Peru
1
Poland
1
Polen
1
Polonia
1
Russia (Federation)
1
Thailand
1
Zimbabwe
1
États-Unis
1