Columbia subject headings:
American Telephone and Telegraph Company.
Cable television--Law and legislation--United States.
Comcast Corporation.
Competition--United States.
Consolidation and merger of corporations--United States.
Harvard subject headings:
American Telephone and Telegraph Company.
Cable television--Law and legislation--United States
Comcast Corporation.
Competition--United States
Consolidation and merger of corporations--United States.
Princeton subject headings:
American Telephone and Telegraph Company.
Cable television--Law and legislation--United States.
Comcast Corporation.
Competition--United States.
Consolidation and merger of corporations--United States.