Columbia subject headings:
Labor unions--Italy--Naples--Officials and employees--Biography.
Russo, Enrico, 1895-1973.
Socialists--Italy--Naples--Biography.
Harvard subject headings:
Labor unions--Italy--Naples--Officials and employees--Biography.
Russo, Enrico, 1895-1973
Socialists--Italy--Naples--Biography.
Princeton subject headings:
Labor unions--Italy--Naples--Officials and employees--Biography.
Russo, Enrico, 1895-1973.
Socialists--Italy--Naples--Biography.