Columbia subject headings:
Black market--United States.
Tobacco industry--Government policy--United States.
Tobacco--Prices--Government policy--United States.
Harvard subject headings:
Black market--United States.
Tobacco industry--Government policy--United States
Tobacco--Prices--Government policy--United States.
Princeton subject headings:
Black market--United States.
Tobacco industry--Government policy--United States.
Tobacco--Prices--Government policy--United States.