a=Western Repertoireb=Eastern Repertoirec=added sequences at end of Germanic series.Note absence of Advent sequences in this source.
Aachen, Bischöfliche Diözesanbibliothek, 13 (XII)
Siglum:
D-AAd 13
Description:
a=Western Repertoireb=Eastern Repertoirec=added sequences at end of Germanic series.Note absence of Advent sequences in this source.