Columbia subject headings:
Elections--Italy--History--20th century.
Political parties--Italy--History--20th century.
Proportional representation--Italy--History--20th century.
Representative government and representation--Italy--History--20th century.
Harvard subject headings:
Elections--Italy
Elections--Italy--History--20th century.
Political parties--Italy
Political parties--Italy--History--20th century
Proportional representation--Italy--History--20th century.
Representative government and representation--Italy--History--20th century.
Princeton subject headings:
Elections--Italy--History--20th century.
Political parties--Italy--History--20th century.
Proportional representation--Italy--History--20th century.
Representative government and representation--Italy--History--20th century.