Columbia subject headings:
Harvard subject headings:
Blum, Léon, 1872-1950.
France--Politics and government--20th century.
Statesmen--France--Biography.
Princeton subject headings:
Blum, Léon, 1872-1950.
France--Politics and government--1914-1940.
Front populaire.
Socialists--France--Biography.
Statesmen--France--Biography.