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