Columbia subject headings:
Bridges--Switzerland--Bern--Design and construction.
Bridges--Switzerland--Bern--History.
Nydeggbrücke (Bern, Switzerland)
Harvard subject headings:
Bridges--Switzerland--Bern--Design and construction.
Bridges--Switzerland--Bern--History.
Nydeggbrücke (Bern, Switzerland)
Stone bridges--Switzerland--Bern.
Princeton subject headings: