Columbia subject headings:
France--History--Louis IX, 1226-1270.
France--Kings and rulers--Biography.
Louis IX, King of France, 1214-1270.
Harvard subject headings:
France--History--Louis IX, 1226-1270.
France--Kings and rulers--Biography.
Louis IX, King of France, 1214-1270
Princeton subject headings:
France--History--Louis IX, 1226-1270.
France--Kings and rulers--Biography.
Louis IX, King of France, 1214-1270.