Columbia subject headings:
Church architecture--Conservation and restoration--Italy--Modena.
Duomo (Modena, Italy)--Conservation and restoration.
Harvard subject headings:
Duomo (Modena, Italy)--Conservation and restoration.
Modena (Italy)--Buildings, structures, etc.--Conservation and restoration.
Princeton subject headings:
Church architecture--Italy Modena--Conservation and restoration.
Church decoration and ornament--Italy Modena--Conservation and restoration.
Duomo (Modena, Italy)