Columbia subject headings:
Architecture--Italy--Gubbio--History.
City planning--Italy--Gubbio--History.
Gubbio (Italy)--Buildings, structures, etc.
Gubbio (Italy)--History.
Harvard subject headings:
Architecture--Italy--Gubbio.
City planning--Italy--Gubbio--History.
Gubbio (Italy)--Buildings, structures, etc.
Gubbio (Italy)--History.
Princeton subject headings:
Architecture--Italy--Gubbio.
City planning--Italy--Gubbio--History.
Gubbio (Italy)--Buildings, structures, etc.
Gubbio (Italy)--History.