Columbia subject headings:
Airlines--Mergers--United States.
Competition--United States.
Consolidation and merger of corporations--United States.
Consumer protection--United States.
Harvard subject headings:
Airlines--Mergers--United States.
Competition--United States
Consolidation and merger of corporations--United States.
Consumer protection--United States
Princeton subject headings:
Airlines--Mergers--United States.
Competition--United States.
Consolidation and merger of corporations--United States.
Consumer protection--United States.