Columbia subject headings:
Emilia-Romagna (Italy)--Geography.
Romans--Italy--Emilia-Romagna.
Harvard subject headings:
Emilia-Romagna (Italy)--Geography.
Romans--Italy--Emilia-Romagna.
Princeton subject headings:
Emilia-Romagna (Italy)--Antiquities.
Emilia-Romagna (Italy)--Geography.