Columbia subject headings:
Communism--Italy--Padua--History--20th century.
Communist parties--Italy--Padua--History--20th century.
Partito comunista italiano--History.
Harvard subject headings:
Princeton subject headings:
Communism--Italy--Padua--History--20th century.
Communist parties--Italy--Padua--History--20th century.
Partito comunista italiano--History--20th century.