Columbia subject headings:
Harvard subject headings:
Berlin (Germany)--Intellectual life--20th century
Harnack Haus (Berlin, Germany)--History.
Max-Planck-Gesellschaft zur Förderung der Wissenschaften--History.
Nobel Prize winners--Germany--Societies, etc.--History.
Nobel Prizes--Societies, etc.--History.
Princeton subject headings:
Berlin (Germany)--Intellectual life--20th century.
Harnack-Haus (Berlin, Germany)--History.
Kaiser Wilhelm-Gesellschaft zur Förderung der Wissenschaften--History.
Learned institutions and societies--Germany--History--20th century.
National socialism and intellectuals.
Research institutes--Germany--History--20th century.