Columbia subject headings:
Competition--United States.
Telecommunication--Deregulation--United States.
Telecommunication--United States--Deregulation.
Telecommunication--United States.
Harvard subject headings:
Competition--United States
Telecommunication--Deregulation--United States
Telecommunication--United States
Princeton subject headings:
Competition--United States.
Telecommunication--Deregulation--United States.
Telecommunication--United States.