Columbia subject headings:
Arts, Italian--Italy--Emilia-Romagna.
Emilia-Romagna (Italy)--Civilization.
Science--Italy--Emilia-Romagna--History.
Harvard subject headings:
Arts--Italy--Emilia-Romagna.
Emilia-Romagna (Italy)--Civilization.
Science--Italy--Emilia-Romagna.
Princeton subject headings: