Columbia subject headings:
Smoking--United States.
Substance abuse--United States--Prevention.
Tobacco use--United States--Prevention.
Youth--Substance use--United States.
Youth--Tobacco use--United States.
Harvard subject headings:
Smoking--United States
Substance abuse--United States--Prevention
Tobacco use--United States--Prevention.
Youth--Substance use--United States.
Youth--Tobacco use--United States.
Princeton subject headings:
Smoking--United States.
Substance abuse--United States--Prevention.
Tobacco use--United States--Prevention.
Youth--Substance use--United States.
Youth--Tobacco use--United States.