Columbia subject headings:
Antiphonaries--Wales.
Gregorian chants.
Manuscripts, Latin (Medieval and modern)--Wales--Facsimiles.
Music--Manuscripts--Facsimiles.
Sacred vocal music--Wales--500-1400.
Harvard subject headings:
Antiphonaries--Wales.
Gregorian chants.
Manuscripts, Latin (Medieval and modern)--Wales--Facsimiles.
Music--Manuscripts--Facsimiles
Princeton subject headings:
Antiphonaries--Wales.
Chants.
Gregorian chants.
Manuscripts, Latin (Medieval and modern)--Wales--Facsimiles.
Music--Manuscripts--Facsimiles.
Sacred vocal music--Wales--500-1400.