Columbia subject headings:
Blum, Léon, 1872-1950--Captivity, 1940-1945.
Blum, Léon, 1872-1950--Trials, litigation, etc.
France--History--German occupation, 1940-1945.
France--Politics and government--1940-1945.
Riom Trial, Riom, France, 1942.
Socialists--France--Biography.
Statesmen--France--Biography.
Trials--France--Riom--History--20th century.
World War, 1939-1945--Prisoners and prisons, German.
Harvard subject headings:
Blum, Léon, 1872-1950.
France--History--German occupation, 1940-1945.
Statesmen--France--Biography.
Princeton subject headings:
Blum, Léon, 1872-1950.
France--History--German occupation, 1940-1945.
Statesmen--France--Biography.