Columbia subject headings:
Archivio arcivescovile di Ravenna--Catalogs.
Church music--Catholic Church.
Franciscans--Italy--Ravenna--Music.
Harvard subject headings:
Archivio arcivescovile di Ravenna--Catalogs.
Cecilia, Saint--Songs and music.
Church music--Catholic Church--500-1400.
Franciscans--Italy--Ravenna--Music.
Liberius, Saint, active 13th century--Songs and music.
Music--Italy--Ravenna--History and criticism.
Princeton subject headings:
Archivio arcivescovile di Ravenna--Catalogs.
Catalogs.
Church music--Catholic Church--500-1400.
Franciscans--Italy--Ravenna--Music.