Columbia subject headings:
Harvard subject headings:
Camera del lavoro di Livorno--History.
Labor unions--Italy--Livorno--History.
Livorno (Italy)--History.
Princeton subject headings:
Camera del lavoro di Livorno--History.
Labor movement--Italy--Livorno--History.
Labor unions--Italy--Livorno--History.
Working class--Italy--Livorno--Political activity--History.