Columbia subject headings:
Telecommunication policy--United States.
Telecommunication--Europe.
Telecommunication--Law and legislation--United States.
Telecommunication--United States.
Harvard subject headings:
Telecommunication policy--United States
Telecommunication--Europe
Telecommunication--Law and legislation--United States
Telecommunication--United States
Princeton subject headings:
Telecommunication policy--United States.
Telecommunication--Europe.
Telecommunication--Law and legislation--United States.
Telecommunication--United States.