Columbia subject headings:
Harvard subject headings:
Autonomy--Congresses.
Lübeck (Germany)--History--20th century--Congresses.
Lübeck (Germany)--Politics and government--20th century--Congresses.
National socialism--Germany--Lübeck--Congresses.
Princeton subject headings:
Autonomy--Congresses.
Lübeck (Germany)--History--20th century--Congresses.
Lübeck (Germany)--History--Sources--Congresses.
Lübeck (Germany)--Politics and government--20th century--Congresses.
National socialism--Germany--Lübeck--Congresses.