Columbia subject headings:
Drug traffic--United States.
Drug traffic.
Organized crime--United States.
Organized crime.
Terrorism--United States.
Terrorism.
Harvard subject headings:
Drug traffic--United States
Drug traffic.
Organized crime--United States
Organized crime.
Terrorism--United States
Terrorism.
Princeton subject headings:
Drug traffic--United States.
Drug traffic.
Organized crime--United States.
Organized crime.
Terrorism--United States.
Terrorism.