Columbia subject headings:
Drug abuse surveys--United States.
Drug abuse--Forecasting.
Drug abuse--United States--Forecasting.
Drug abuse--United States--Statistics.
Young adults--Drug use--United States--Statistics.
Harvard subject headings:
Drug abuse surveys--United States.
Drug abuse--United States--Forecasting.
Young adults--Drug use--United States--Statistics.
Princeton subject headings:
Drug abuse surveys--United States.
Drug abuse--United States--Forecasting.
Statistics.
Young adults--Drug use--United States--Statistics.