Columbia subject headings:
Harvard subject headings:
Bern (Switzerland : Canton)--History--19th century.
Bern (Switzerland : Canton)--History--20th century.
Bern (Switzerland)--History--19th century.
Bern (Switzerland)--History--20th century.
Princeton subject headings:
Bern (Switzerland : Canton)--History--19th century.
Bern (Switzerland : Canton)--History--20th century.
Bern (Switzerland)--History--19th century.
Bern (Switzerland)--History--20th century.