Columbia subject headings:
Harvard subject headings:
Camera del lavoro di Firenze--History.
Cooperative societies--Italy--Florence--History.
Labor unions--Italy--Florence--History.
Socialism--Italy--Florence--History.
Socialism--Italy--Florence.
Princeton subject headings:
Camera del lavoro di Firenze--History.
Cooperative societies--Italy--Florence--History.
Labor unions--Italy--Florence--History.
Socialism--Italy--Florence--History.