Geographic Subject
Germany (West)
755
Germany
573
France
50
United States
50
European Economic Community countries
36
Great Britain
34
4.415
33
Europe
29
North Rhine-Westphalia
19
Cologne
17
Germany (East)
16
Prussia
15
Austria
14
Italy
14
Korea (South)
14
Rome
13
European Union countries
12
Poland
12
Soviet Union
12
Greece
11
Iran
11
Egypt
10
Turkey
10
Netherlands
9
Spain
9
Düsseldorf
6
England
6
South Africa
6
Switzerland
6
Prussia (Germany)
5
Rhine River Valley
5
Russia
5
Yugoslavia
5
Afghanistan
4
Berg (Duchy)
4
Cologne (Germany)
4
Developing countries
4
Israel
4
Jülich-Berg
4
4
3
Africa
3
Belgium
3
Berlin (Germany)
3
China
3
Congo (Democratic Republic)
3
Deutschland
3
Düsseldorf (Germany)
3
Eifel
3
India
3
Japan
3
more ...