Columbia subject headings:
Germany--History--Beer Hall Putsch, 1923--Congresses.
Germany--History--Revolution, 1918--Congresses.
Germany--History--Unification, 1990--Congresses.
Kristallnacht, 1938--Congresses.
Harvard subject headings:
Germany--History--Beer Hall Putsch, 1923--Congresses.
Germany--History--Unification, 1990--Congresses.
Kristallnacht, 1938--Congresses.
National socialism--Congresses.
Princeton subject headings:
Germany--History--Beer Hall Putsch, 1923--Congresses.
Germany--History--Revolution, 1918--Congresses.
Germany--History--Unification, 1990--Congresses.
Kristallnacht, 1938--Congresses.