Columbia subject headings:
Catholic Church--Liturgy--Texts.
Catholic Church. Patriarchate of Aquileia (Italy)
Church music--Italy--Aquileia.
Divine office (Music)
Divine office--Manuscripts.
Gregorian chants.
Manuscripts, Latin (Medieval and modern)
Harvard subject headings:
Catholic Church--Liturgy.
Divine office (Music)
Divine office--Manuscripts.
Gregorian chants.
Liturgies, Early Christian--Italy--Aquileia.
Manuscripts, Latin (Medieval and modern)
Manuscripts, Latin (Medieval and modern)--Italy.
Music--Manuscripts--Italy--Cividale del Friuli.
Music--Manuscripts--Italy--Gorizia.
Music--Manuscripts--Slovenia--Ljubljana.
Princeton subject headings: