Geographic Subject
Germany
33
Germany (West)
30
Switzerland
23
France
12
Sweden
11
Netherlands
6
United States
5
China
4
Austria
3
Cameroon
3
Denmark
3
Developing countries
3
Japan
3
Algeria
2
Australia
2
Europe
2
European Union countries
2
Great Britain
2
Israel
2
Italy
2
Liechtenstein
2
Morocco
2
Papua New Guinea
2
Senegal
2
Soviet Union
2
Suisse
2
4.050
1
4.415
1
5.420
1
Aargau
1
Aargau (Switzerland)
1
Africa, German East
1
Africa, West
1
Allbania
1
Allemagne
1
Allemagne (République fédérale, 1949- )
1
Bavaria
1
Berlin
1
Brandenburg
1
Burkina Faso
1
Canada
1
Cassel
1
Cologne
1
Cologne (Germany)
1
Côte d'Ivoire
1
East Sepik Province
1
East Sepik Province (Papua New Guinea)
1
Estonia
1
Ethiopia
1
Foreign countries
1
more ...