Columbia subject headings:
Bern (Switzerland)--Buildings, structures, etc.
Burg Nydegg (Bern, Switzerland)
Excavations (Archaeology)--Switzerland--Bern.
Fortification--Switzerland--Bern--History.
Harvard subject headings:
Bern (Switzerland)--Buildings, structures, etc.
Burg Nydegg (Bern, Switzerland)
Excavations (Archaeology)--Switzerland--Bern.
Fortification--Switzerland--Bern--History.
Princeton subject headings:
Bern (Switzerland)--Buildings, structures, etc.
Burg Nydegg (Bern, Switzerland)
Excavations (Archaeology)--Switzerland--Bern.
Fortification--Switzerland--Bern--History.