Qui operatus est Petro in

Source: 
Firenze (Florence), Arcivescovado - Biblioteca, s.c.
Folio: 
148r
Sequence: 
1
Feast: 
Pauli
Office/Mass: 
M
Genre: 
A
Position: 
1.1
Cantus ID: 
004489
Mode: 
1
Differentia: 
3
Differentia database: 
1--h-h-g-f-gh-ggh--4 67o