Columbia subject headings:
Gregorian chants--Germany--Kiedrich.
Kyriales--Germany--Kiedrich.
Masses (Unison)
Harvard subject headings:
Kyriales--Germany--Kiedrich.
Music--Manuscripts--Facsimiles.
Princeton subject headings:
Gregorian chants--Germany--Kiedrich.
Gregorian chants.
Kyriales--Germany--Kiedrich.
Kyriales.