Columbia subject headings:
Harvard subject headings:
Campiglia Marittima (Italy)--Buildings, structures, etc.
Fortification--Italy--Campiglia Marittima.
Rocca San Silvestro (Campiglia Marittima, Italy)
Princeton subject headings:
Campiglia Marittima (Italy)--Buildings, structures, etc.
Fortification--Italy--Campiglia Marittima.
Rocca San Silvestro (Campiglia Marittima, Italy).