Columbia subject headings:
Aeronautics, Commercial--Law and legislation--Soviet Union.
Aeronautics, Commercial--Law and legislation--United States.
Soviet Union--Foreign relations--United States.
United States--Foreign relations--Soviet Union.
Harvard subject headings:
Aeronautics, Commercial--Law and legislation--Soviet Union.
Aeronautics, Commercial--Law and legislation--United States
Soviet Union--Foreign relations--United States.
United States--Foreign relations--Soviet Union.
Princeton subject headings: