Petrus ad se reversus dixit

Source: 
Roma, Biblioteca Vallicelliana, C.5
Folio: 
221v
Sequence: 
6
Feast: 
Petri
Office/Mass: 
M
Genre: 
A
Position: 
2.5
Cantus ID: 
203834
Mode: 
8
Differentia: 
1
Differentia database: 
1--k-k-j-k-h-g--4 118a