Columbia subject headings:
Centro internazionale congressi (Florence, Italy)
Florence (Italy)--Buildings, structures, etc.
Harvard subject headings:
Centro internazionale congressi (Florence, Italy)
Florence (Italy)--Buildings, structures, etc.
Palaces--Italy--Florence.
Palazzo dei congressi (Florence, Italy)
Princeton subject headings:
Historic buildings--Italy--Florence.
Palazzo dei Congressi (Florence, Italy)--History.