Columbia subject headings:
Telecommunication policy--United States.
Telecommunication policy.
Telecommunication--Social aspects--United States.
Telecommunication--Social aspects.
Telecommunication--Technological innovations.
Telecommunication--United States.
Harvard subject headings:
Communication policy--United States.
Communication--Social aspects--United States
Communication--Technological innovations--United States.
Telecommunication policy--United States
Telecommunication--Social aspects--United States.
Telecommunication--Technological innovations
Telecommunication--United States
Princeton subject headings:
Telecommunication policy--United States.
Telecommunication--Social aspects--United States.
Telecommunication--Technological innovations.
Telecommunication--United States.