Columbia subject headings:
Gregorian chants--History and criticism.
Music--Manuscripts.
Neumes.
Stiftsbibliothek Sankt Gallen.
Harvard subject headings:
Gregorian chants--History and criticism.
Music--Manuscripts
Neumes.
Stiftsbibliothek Sankt Gallen. Manuscript,
Princeton subject headings:
Gall, Switzerland. Stiftsbibliothek. Mss.
Gregorian chants--History and criticism.
Music--Manuscripts.
Neumes.