Columbia subject headings:
Fortification--Savoy (France and Italy)--History.
Military architecture--Savoy (France and Italy)
Harvard subject headings:
Fortification--Savoy (France and Italy)--History.
Military architecture--Savoy (France and Italy)
Princeton subject headings:
Fortification--Savoy (France and Italy)--History.
Military architecture--Savoy (France and Italy).