Columbia subject headings:
Harvard subject headings:
Graduals (Chants)
Gregorian chants--Manuscripts--Facsimiles.
Music--Manuscripts--Facsimiles.
Music--Manuscripts--France--Paris.
Princeton subject headings:
Catholic Church. Gradual (Ms. Paris Bibliothèque Nationale de France lat. 776)
Facsimiles.
Graduals (Chants)
Graduals (Liturgical books)
Music--Manuscripts--Facsimiles.