Columbia subject headings:
Cuba--Economic conditions--1918-1959.
Cuba--Foreign economic relations--United States.
United States--Foreign economic relations--Cuba.
Harvard subject headings:
Cuba--Economic conditions--1918-1959.
Cuba--Foreign economic relations--United States.
United States--Foreign economic relations--Cuba.
Princeton subject headings:
Cuba--Economic conditions--1918-1959.
Cuba--Foreign economic relations--United States.
United States--Foreign economic relations--Cuba.