Geographic Subject
Germany
173
France
60
Switzerland
47
Sweden
36
Germany (West)
17
Netherlands
17
Indonesia
13
Romania
13
Algeria
12
Hungary
12
Poland
10
Prussia
10
Spain
10
Denmark
9
India
9
Silesia
9
United States
9
Finland
8
Iran
8
Italy
8
Turkey
8
Egypt
7
Morocco
7
Saxony
7
Burkina Faso
6
Cameroon
6
China
6
Estonia
6
Kenya
6
Rome
6
Tunisia
6
Bavaria
5
Great Britain
5
Greece
5
Soviet Union
5
Tanzania
5
Thailand
5
Yugoslavia
5
Baden
4
Brazil
4
Bulgaria
4
England
4
Ethiopia
4
Germany (East)
4
Hesse
4
Java
4
Mexico
4
Portugal
4
Schleswig-Holstein
4
Sri Lanka
4
more ...