Columbia subject headings:
Harvard subject headings:
Brain drain--Germany--History--20th century.
Germany--Intellectual life--20th century.
Intellectuals--Germany--History--20th century.
Kahler, Erich, 1885-1970.
Princeton subject headings:
Authors, Exiled--Biography.
Germany--Intellectual life--20th century.
Historians--Austria--Biography.
Kahler, Erich, 1885-1970.