Columbia subject headings:
Drug abuse--United States--Statistics.
National Household Survey on Drug Abuse (U.S.)
Substance abuse--United States--Statistics.
Harvard subject headings:
Drug abuse surveys--United States--Mathematical models.
Drug abuse--United States--Statistics
National Household Survey on Drug Abuse (U.S.)
Substance abuse--United States--Statistics.
Princeton subject headings:
Drug abuse surveys--United States--Mathematical models.
Drug abuse--United States--Statistics.
National Household Survey on Drug Abuse (U.S.)
Statistics.
Substance abuse--United States--Statistics.