Columbia subject headings:
Harvard subject headings:
Autonomia operaia organizzata (Italy)--Periodicals.
Communism--Italy--History--20th century
Communism--Italy--Periodicals.
Labor movement--Italy--Periodicals.
Labor unions--Political activity--Italy--History--20th century.
Radicalism--Italy--History--20th century
Rosso.
Princeton subject headings:
Autonomia operaia organizzata (Italy)--Periodicals.
Communism--Italy--History--20th century.
Labor unions--Political activity--Italy--History--20th century.
Radicalism--Italy--History--20th century.
Rosso (Milan, Italy)