Geographic Subject
Germany (West)
Germany
9
Switzerland
5
France
4
Germany (East)
3
4.415
2
Africa
2
Arab countries
2
Bremen
2
Great Britain
2
United States
2
4.480
1
Austria
1
Belgium
1
Bremen (Duchy)
1
Developing countries
1
European Economic Community countries
1
Japan
1
Jülich
1
Karlsruhe
1
Korea
1
Norway
1
Poland
1
Soviet Union
1
Sweden
1
Verden (Duchy)
1
Wetteraukreis
1