Columbia subject headings:
Harvard subject headings:
Elections--Germany--History--19th century.
Elections--Germany--History--20th century
Elections--Germany--Statistics.
Germany. Reichstag--Elections--History.
Voting--Germany--History--19th century.
Voting--Germany--History--20th century.
Voting--Germany--Statistics.
Princeton subject headings:
Elections--Germany--History--19th century.
Elections--Germany--History--20th century.
Elections--Germany--Statistics.
Voting--Germany--History--19th century.
Voting--Germany--History--20th century.
Voting--Germany--Statistics.