Columbia subject headings:
Catholic Church--Beneventan rite.
Gregorian chants.
Music--Manuscripts--Facsimiles.
Harvard subject headings:
Catholic Church--Beneventan rite.
Gregorian chants.
Music--Manuscripts--Facsimiles.
Princeton subject headings:
Catholic Church--Beneventan rite.
Chants.
Gregorian chants.
Music--Manuscripts--Facsimiles.