Columbia subject headings:
Telecommunication--Law and legislation--United States.
Telecommunication--Social aspects--United States.
Telecommunication--United States.
Harvard subject headings:
Telecommunication--Law and legislation--United States
Telecommunication--Social aspects--United States.
Telecommunication--United States
Princeton subject headings:
Telecommunication--Law and legislation--United States.
Telecommunication--Social aspects--United States.
Telecommunication--United States.