Columbia subject headings:
Great Britain--Commerce--United States.
Great Britain--Commercial policy.
United States--Commerce--Great Britain.
United States--Commercial policy.
Harvard subject headings:
Great Britain--Commerce--United States.
Great Britain--Commercial policy.
United States--Commerce--Great Britain.
United States--Commercial policy.
Princeton subject headings:
Great Britain--Commerce--United States.
Great Britain--Commercial policy.
United States--Commerce--Great Britain.
United States--Commercial policy.