Columbia subject headings:
Architecture--Italy--Bologna--History--20th century.
Building--Italy--History--20th century.
Tabarroni, Ildebrando, 1882-1958.
Harvard subject headings:
Princeton subject headings:
Architecture--Italy--Bologna--History--20th century.
Architecture--Italy--History--20th century.
Bologna (Italy)--Buildings, structures, etc.
Building--Italy--Bologna--History--20th century.
Building--Italy--History--20th century.
Tabarroni, Ildebrando, 1882-1958.