Columbia subject headings:
Harvard subject headings:
Freiburg im Breisgau (Germany)--Colonies.
Freiburg im Breisgau (Germany)--History.
National socialism--Germany--Freiburg im Breisgau.
Princeton subject headings:
Baden-Württemberg (Germany)--History--20th century.
Baden-Württemberg (Germany)--Politics and government--20th century.
Freiburg im Breisgau (Germany)--History--20th century.