Columbia subject headings:
Harvard subject headings:
Aeronautics, Commercial--Deregulation--United States--Congresses.
Aeronautics, Commercial--United States--Congresses.
Collective bargaining--Aeronautics--United States--Congresses.
Princeton subject headings:
Aeronautics, Commercial--United States--Deregulation--Congresses.
Collective bargaining--Aeronautics--United States--Congresses.