Columbia subject headings:
Cárdenas, Lázaro, 1895-1970.
Mexico--Politics and government--1910-1946.
Mexico--Social conditions--20th century.
Presidents--Mexico--20th century.
Harvard subject headings:
Cárdenas, Lázaro, 1895-1970
Mexico--History--1910-1946
Mexico--Politics and government--1910-1946
Princeton subject headings:
Cárdenas, Lázaro, 1895-1970.
Mexico--Politics and government--1910-1946.
Mexico--Social conditions--20th century.
Presidents--Mexico--20th century.