Columbia subject headings:
Harvard subject headings:
Betancur, Belisario, 1923-2018
Colombia--Foreign relations--United States.
United States--Foreign relations--Colombia.
Princeton subject headings:
Betancur, Belisario, 1923-2018--Travel--United States.
Colombia--Foreign relations--United States.
United States--Foreign relations--Colombia.
Visits of state--United States.