Columbia subject headings:
Harvard subject headings:
Elections--History--20th century.
Elections--Japan--History--20th century.
Political parties--History--20th century.
Political parties--Japan--History--20th century.
Princeton subject headings:
Elections--History--20th century.
Elections--Japan--History--20th century.
Political parties--History--20th century.
Political parties--Japan--History--20th century.