Columbia subject headings:
Harvard subject headings:
Cárdenas, Lázaro, 1895-1970.
Political refugees--Mexico--History--20th century
Political refugees--Spain--History--20th century
Prieto, Indalecio, 1883-1962.
Spain--History--Civil War, 1936-1939--Refugees--Mexico.
Princeton subject headings:
Cárdenas, Lázaro, 1895-1970.
Political refugees--Mexico--History--20th century.
Political refugees--Spain--History--20th century.
Prieto, Indalecio, 1883-1962.
Spain--History--Civil War, 1936-1939--Refugees.