Region
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Marburg (Germany)
1
Massachusetts
1
Mecklenburg-Vorpommern (Germany)
1
Neckarhausen (Nürtingen)
1
Nürtingen
1
Nürtingen (Germany)
1
Pennsylvania
1
Philadelphia
1
Schwäbisch Hall
1
Schwäbisch Hall (Germany)
1
Soviet Union
1
Spain
1
Thuringia
1
Thuringia (Germany)
1
United States
1
Württemberg (Germany)
1
united states
1