Columbia subject headings:
Labor laws and legislation--Italy--Congresses.
Redenti, Enrico, 1883-1962--Congresses.
Harvard subject headings:
Labor laws and legislation--Italy--Congresses
Redenti, Enrico, 1883-1962--Congresses.
Princeton subject headings:
Labor laws and legislation--Italy--Congresses.
Redenti, Enrico, 1883-1962--Congresses.