In nomine Jesu Christi

Source: 
Roma, Biblioteca Vallicelliana, C.5
Folio: 
221r
Sequence: 
1
Feast: 
Petri
Office/Mass: 
M
Genre: 
A
Position: 
1.5
Cantus ID: 
003260
Mode: 
2
Differentia: 
1
Differentia database: 
1--f-f-f-ed-cd-d--4 153e