Columbia subject headings:
Mexico--Economic conditions--1918-
Mexico--Foreign economic relations.
Mexico--History--1910-1946.
Mexico--History--1946-1970.
World War, 1939-1945--Mexico.
Harvard subject headings:
Mexico--Economic conditions--1918-
Mexico--Foreign economic relations.
Mexico--History--1910-1946.
World War, 1939-1945--Mexico.
Princeton subject headings: