Columbia subject headings:
Harvard subject headings:
Saxony (Germany)--History--20th century--Congresses.
Saxony (Germany)--Politics and government--20th century--Congresses.
Saxony-Anhalt (Germany)--History--20th century--Congresses.
Saxony-Anhalt (Germany)--Politics and government--20th century--Congresses.
Thuringia (Germany)--History--20th century--Congresses.
Thuringia (Germany)--Politics and government--20th century--Congresses.
Princeton subject headings:
Saxony (Germany)--History--20th century--Congresses.
Saxony (Germany)--Politics and government--20th century--Congresses.
Saxony-Anhalt (Germany)--History--20th century--Congresses.
Saxony-Anhalt (Germany)--Politics and government--20th century--Congresses.
Thuringia (Germany)--History--20th century--Congresses.
Thuringia (Germany)--Politics and government--20th century--Congresses.