Geographic Subject
Germany (West)
5
France
4
Germany
4
Indonesia
2
Canada
1
England
1
Europe, Eastern
1
Gauteng
1
Greece
1
Halle an der Saale
1
Hauts-de-Seine (France)
1
India
1
Iran
1
Mettingen
1
North Rhine-Westphalia
1
Poland
1
Proefschriften (vorm)
1
Québec (Province)
1
South Africa
1
Soviet Union
1
Spain
1
Tunis
1
Tunisia
1