Columbia subject headings:
Harvard subject headings:
Credo (Music)--15th century.
Gloria in excelsis Deo (Music)--15th century.
Hymns, Latin--15th century.
Masses--15th century--Parts.
Music--Manuscripts--Italy--Venice.
Part songs, Sacred--15th century.
Sacred vocal music--15th century.
Princeton subject headings:
Credo (Music)
Facsimiles.
Gloria in excelsis Deo (Music)
Hymns, Latin.
Masses.
Motets.
Music--Manuscripts--Facsimiles.