Erat Petrus inter duos

Source: 
Rouen, Bibliothèque municipale, 248 (olim A. 339)
Folio: 
048r
Sequence: 
9
Feast: 
Vincula Petri
Office/Mass: 
M
Genre: 
A
Position: 
1.4
Cantus ID: 
201586
Mode: 
2
Differentia: 
D1
Differentia database: 
1--f-f-f-e-c-d--4 152b