Columbia subject headings:
Dictatorship--Europe, Eastern--History--20th century--Congresses.
Dictatorship--Germany--History--20th century--Congresses.
Dictatorship--Italy--History--20th century--Congresses.
Dictatorship--Soviet Union--Congresses.
Elections--Germany--History--20th century--Congresses.
Elections--Soviet Union--Congresses.
Germany. Reichstag--Elections--History--20th century--Congresses.
Soviet Union. Verkhovnyĭ Sovet--Elections--History--Congresses.
Totalitarianism--History--20th century--Congresses.
Harvard subject headings:
Dictatorship--Europe, Eastern--History--20th century--Congresses.
Dictatorship--Germany--History--20th century--Congresses.
Dictatorship--Italy--History--20th century--Congresses.
Dictatorship--Soviet Union--Congresses.
Elections--Germany--History--20th century--Congresses.
Elections--Soviet Union--Congresses.
Germany. Reichstag--Elections--History--20th century--Congresses.
Soviet Union. Verkhovnyĭ Sovet--Elections--History--Congresses.
Totalitarianism--History--20th century--Congresses.
Princeton subject headings:
Dictatorship--Europe, Eastern--History--20th century--Congresses.
Dictatorship--Germany--History--20th century--Congresses.
Dictatorship--Italy--History--20th century--Congresses.
Dictatorship--Soviet Union--Congresses.
Elections--Germany--History--20th century--Congresses.
Elections--Soviet Union--Congresses.
Germany. Reichstag--Elections--History--20th century--Congresses.
Soviet Union. Verkhovnyĭ Sovet--Elections--History--Congresses.
Totalitarianism--History--20th century--Congresses.