Geographic Subject
Germany
14
France
10
Indonesia
10
Germany (West)
7
India
7
Soviet Union
6
Netherlands
4
United States
4
Asia, Southeastern
3
Middle East
3
Russia (Federation)
3
China
2
England
2
Germany (East)
2
Korea
2
Massachusetts
2
Tunisia
2
Vietnam
2
4.415
1
Algeria
1
Algiers
1
Asia
1
Baden-Württemberg
1
Bangladesh
1
Bavaria
1
Bonn
1
Bordeaux
1
Bordeaux (Aquitaine)
1
Cameroon
1
Cologne
1
Developing countries
1
Egypt
1
Foreign countries
1
Ghana
1
Greece
1
Heidelberg
1
Kiel
1
Korea (South)
1
Manado
1
Mexico
1
Morocco
1
North Rhine-Westphalia
1
Primorskiĭ kraĭ
1
Primorskiĭ kraĭ (Russia)
1
Prussia
1
Russia
1
Russian Far East
1
Sengkang
1
Singapore
1
Strasbourg
1
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