Columbia subject headings:
Germany--History--20th century--Sources.
Germany--History--Errors, inventions, etc.
Riezler, Kurt, 1882-1955. Tagebücher, Aufsätze, Dokumente.
World War, 1914-1918--Germany--Causes--Sources.
Harvard subject headings:
Historiography--Germany--History--20th century
Political science--Germany--History--20th century
Riezler, Kurt, 1882-1955.
Princeton subject headings: