Columbia subject headings:
Educational technology--United States--Finance.
Internet in education--United States--Finance.
Telecommunication--Rates--Law and legislation--United States.
Telecommunication--Taxation--United States.
Harvard subject headings:
Educational technology--United States--Finance.
Internet in education--United States--Finance.
Telecommunication--Rates--Law and legislation--United States.
Telecommunication--Taxation--United States.
Princeton subject headings: