Geographic Subject
Europe
210
Europe, Eastern
121
United States
28
Soviet Union
27
Germany
17
France
10
Communist countries
9
Europe, Central
9
Poland
7
Asia
6
Great Britain
6
Balkan Peninsula
5
Germany (West)
5
Africa
4
Central Europe
4
England
4
London
4
Austria
3
Europe, Northern
3
European Economic Community countries
3
Japan
3
Russia
3
China
2
Czechoslovakia
2
Developing countries
2
Grande-Bretagne
2
Hungary
2
India
2
Middle East
2
Oceania
2
Slavic countries
2
Sweden
2
Turkey
2
4
1
4.810
1
Africa, Central
1
America
1
Baltic States
1
Berlin (Germany)
1
Black Sea Region
1
Bohemia
1
Bulgaria
1
Burma
1
Byzantine Empire
1
Canada
1
Cologne (Germany)
1
Cuba
1
Czech Republic
1
Estonia
1
Etruria
1
more ...