Columbia subject headings:
German reunification question (1949-1990)--Congresses.
Liberalism--Germany--History--19th century--Congresses.
Liberalism--Germany--History--20th century--Congresses.
Harvard subject headings:
German reunification question (1949-1990)--Congresses
Liberalism--Germany--History--19th century--Congresses.
Liberalism--Germany--History--20th century--Congresses.
Princeton subject headings:
German reunification question (1949-1990)--Congresses.
Liberalism--Germany--History--Congresses.