Columbia subject headings:
Drug abuse--Prevention--International cooperation.
Drug control--United States.
Drug control--Western Hemisphere--International cooperation.
Harvard subject headings:
Drug abuse--Prevention--International cooperation.
Drug control--Western Hemisphere--International cooperation.
Drug traffic--Government policy--United States.
Princeton subject headings:
Drug abuse--Prevention--International cooperation.
Drug control--Western Hemisphere--International cooperation.
Drug traffic--Government policy--United States.