Columbia subject headings:
Harvard subject headings:
Labor unions--Italy--Reggio di Calabria--Political activity.
Labor--Italy--Reggio di Calabria--Political activity.
Working class--Italy--Reggio di Calabria--Political activity.
Princeton subject headings:
Labor unions--Italy--Reggio di Calabria--Political activity.
Working class--Italy--Reggio di Calabria--Political activity.