Columbia subject headings:
Haas, Ludwig, 1875-1930.
Politicians--Germany--Biography.
Harvard subject headings:
Democracy--Germany--History--Congresses.
Germany--Politics and government--1918-1933--Congresses.
Haas, Ludwig, 1875-1930--Congresses.
Jewish politicians--Germany--Biography--Congresses.
Politicians--Germany--Biography--Congresses.
Princeton subject headings:
Democracy--Germany--History--Congresses.
Germany--Politics and government--1918-1933--Congresses.
Haas, Ludwig, 1875-1930--Congresses.
Jewish politicians--Germany--Biography--Congresses.
Politicians--Germany--Biography--Congresses.