Columbia subject headings:
Aeronautics and state--Canada--History.
Aeronautics, Commercial--Government policy--Canada--History.
Airlines--Government policy--Canada--History.
Harvard subject headings:
Aeronautics and state--Canada--History.
Aeronautics, Commercial--Government policy--Canada--History.
Aeronautics, Commercial--Government policy--Canada.
Airlines--Government policy--Canada--History.
Airlines--Government policy--Canada.
Princeton subject headings:
Aeronautics and state--Canada--History.
Aeronautics, Commercial--Government policy--Canada--History.
Airlines--Government policy--Canada--History.