Columbia subject headings:
Opera di S. Maria del Fiore (Florence, Italy)
Santa Maria del Fiore (Cathedral : Florence, Italy)
Harvard subject headings:
Opera di S. Maria del Fiore (Florence, Italy)
Santa Maria del Fiore (Cathedral : Florence, Italy)
Princeton subject headings:
Opera di S. Maria del Fiore (Florence, Italy)
Santa Maria del Fiore (Cathedral : Florence, Italy)