Columbia subject headings:
Harvard subject headings:
Drug abuse--Health aspects--United States.
Drug abuse--United States
Drug addicts--United States.
Drug traffic--Social aspects--United States.
Drugs--Social aspects--United States.
Pharmaceutical industry--Social aspects--United States.
Poor--Drug use--United States.
Youth--Drug use--United States
Princeton subject headings:
Drug abuse--Health aspects--United States.
Drug abuse--United States.
Drug addicts--United States.
Drug traffic--Social aspects--United States.
Pharmaceutical industry--Social aspects--United States.
Poor--Drug use--United States.
Youth--Drug use--United States.