Columbia subject headings:
Berlin (Germany)--Intellectual life--19th century.
Berlin (Germany)--Intellectual life--20th century.
Berlin (Germany)--Social life and customs--19th century.
Berlin (Germany)--Social life and customs--20th century.
Harvard subject headings:
Berlin (Germany)--Social life and customs--20th century.
Germany--Social life and customs--20th century.
Princeton subject headings:
Berlin (Germany)--Social life and customs--19th century.
Berlin (Germany)--Social life and customs--20th century.
Germany--Intellectual life--19th century.
Germany--Intellectual life--20th century.