Columbia subject headings:
Early printed books--Italy--Ravenna--16th century--Bibliography--Catalogs.
Incunabula--Italy--Ravenna--Bibliography--Catalogs.
Seminario arcivescovile di Ravenna--Library--Catalogs.
Harvard subject headings:
Early printed books--Italy--Ravenna--16th century--Bibliography--Catalogs.
Incunabula--Italy--Ravenna--Bibliography--Catalogs.
Seminario arcivescovile di Ravenna. Biblioteca--Catalogs.
Princeton subject headings:
Catalogs.
Early printed books--Italy--Ravenna--16th century--Bibliography--Catalogs.
Incunabola--Italy--Ravenna--Bibliography--Catalogs.
Seminario arcivescovile di Ravenna (Ravenna, Italy)--Library--Catalogs.