Geographic Subject
Germany (West)
1,015
Germany
508
United States
68
France
52
Great Britain
52
European Economic Community countries
45
4.415
40
European Union countries
27
Switzerland
26
Korea (South)
20
Germany (East)
18
Malaysia
16
Europe
14
India
14
North Rhine-Westphalia
13
Hamburg
10
Baden-Württemberg
9
Greece
9
Spain
9
Italy
8
Colombia
7
Netherlands
7
Alabama
6
China
6
Hesse
6
Indonesia
6
Soviet Union
6
Austria
5
Rhineland-Palatinate
5
Russia (Federation)
5
South Africa
5
Taiwan
5
Turkey
5
Bavaria
4
Cologne
4
Iraq
4
Mexico
4
Pakistan
4
Pennsylvania
4
4.630
3
Allemagne
3
Canada
3
Comoros
3
Hungary
3
Japan
3
Jülich-Berg
3
Latin America
3
Lower Saxony
3
Mauritius
3
Poland
3
more ...