Columbia subject headings:
Harvard subject headings:
Church architecture--Italy--Modena--Designs and plans.
Duomo (Modena, Italy)
Modena (Italy)--Buildings, structures, etc.--Designs and plans.
Princeton subject headings:
Architecture, Romanesque--Italy--Modena--Congresses.
Church architecture--Italy--Modena--Designs and plans.
Duomo (Modena, Italy)--Congresses.
Duomo (Modena, Italy)--Pictorial works.
Modena (Italy)--Buildings, structures, etc.