Columbia subject headings:
Cable television--United States.
Competition--United States.
Consolidation and merger of corporations--United States.
Direct broadcast satellite television--United States.
Harvard subject headings:
Cable television--United States
Competition--United States
Consolidation and merger of corporations--United States.
Direct broadcast satellite television--United States.
Princeton subject headings:
Cable television--United States.
Competition--United States.
Consolidation and merger of corporations--United States.
Direct broadcast satellite television--United States.