Columbia subject headings:
Architecture--Italy--Padua.
Padua (Italy)--Buildings, structures, etc.
Palazzo della ragione (Padua, Italy)
Harvard subject headings:
Architecture, Medieval--Italy--Padua.
Architecture, Renaissance--Italy--Padua.
Architecture--Italy--Padua--Designs and plans.
Padua (Italy)--Buildings, structures, etc.
Palaces--Conservation and restoration--Italy--Padua.
Palazzo della ragione (Padua, Italy)--History.
Princeton subject headings:
Architecture, Medieval--Italy--Padua.
Architecture, Renaissance--Italy--Padua.
Architecture--Italy--Padua--Designs and plans.
Padua (Italy)--Buildings, structures, etc.
Palaces--Conservation and restoration--Italy--Padua.
Palazzo della ragione (Padua, Italy)--History.