Columbia subject headings:
Harvard subject headings:
Naples (Italy)--Social conditions--21st century--Congresses.
Organized crime--Italy--Congresses.
Organized crime--Italy--Naples--Congresses.
Organized crime--Prevention--Congresses.
Princeton subject headings:
Naples (Italy)--Social conditions--21st century--Congresses.
Organized crime--Italy--Congresses.
Organized crime--Italy--Naples--Congresses.
Organized crime--Prevention--Congresses.