Columbia subject headings:
Architecture--Conservation and restoration--Italy--Ferrara--Congresses.
Ferrara (Italy)--Buildings, structures, etc.
Stefani, Giuseppe, 1895-1944--Congresses.
Harvard subject headings:
Princeton subject headings:
Architecture--Italy--Ferrara--Conservation and restoration--Congresses.
Ferrara (Italy)--Buildings, structures, etc.
Stefani, Giuseppe, 1895-1944--Congresses.