Columbia subject headings:
Electronic commerce--Taxation--Law and legislation--United States.
Internet--United States.
Local taxation--Law and legislation--United States.
Taxation, State--Law and legislation.
Harvard subject headings:
Electronic commerce--Taxation--Law and legislation--United States.
Internet--United States
Local taxation--Law and legislation--United States.
Taxation, State--Law and legislation.
Taxation--Law and legislation--United States--States
Princeton subject headings: