Columbia subject headings:
Germany--Cultural policy--History--Sources.
Learning and scholarship--Germany--History--Sources.
Religion and politics--Germany.
Harvard subject headings:
Harnack, Adolf von, 1851-1930.
Kaiser Wilhelm-Gesellschaft zur Förderung der Wissenschaften.
Learning and scholarship--Germany--History--20th century.
Libraries--Germany--Berlin--History--20th century.
Preussische Akademie der Wissenschaften
Religion and politics--Germany.
Science and state--Germany.
Princeton subject headings: