Columbia subject headings:
Naples (Kingdom)--Economic conditions--16th century.
Naples (Kingdom)--History, Military--16th century.
Naples (Kingdom)--History--16th century.
Harvard subject headings:
Fortification--Italy--Naples (Kingdom)
Naples (Kingdom)--Economic conditions--16th century.
Naples (Kingdom)--History, Military--16th century.
Naples (Kingdom)--History, Military.
Naples (Kingdom)--History--16th century.
Princeton subject headings:
Fortification--Italy--Naples (Kingdom).
Naples (Kingdom)--History, Military.