Columbia subject headings:
Tobacco use--Economic aspects.
Tobacco use.
Tobacco--Physiological effect.
Harvard subject headings:
Antismoking movement.
Smoking--Economic aspects.
Smoking--Government policy.
Tobacco use--Economic aspects.
Tobacco use--Social aspects.
Tobacco use.
Tobacco--Physiological effect
Princeton subject headings:
Tobacco use--Economic aspects.
Tobacco use.
Tobacco--Physiological effect.