Columbia subject headings:
Haller, Johannes, 1865-1947.
Historians--Germany--Biography.
Harvard subject headings:
Germany--History.
Germany--Politics and government.
Haller, Johannes, 1865-1947.
Historians--Germany--Biography
Princeton subject headings:
Germany--History.
Germany--Politics and government.
Haller, Johannes, 1865-1947.
Historians--Germany--Biography.