Petrus apostolus dixit

Source: 
Aosta, Seminario Maggiore - Biblioteca, 6
Folio: 
059v
Sequence: 
1
Feast: 
Cathedra Petri
Office/Mass: 
M
Genre: 
A
Position: 
1.3
Cantus ID: 
004283
Mode: 
3
Differentia: 
A1
Differentia database: 
1--k-k-k-h-k-jh--4 97a