Quem dicunt homines esse

Source: 
Roma, Biblioteca Vallicelliana, C.5
Folio: 
093v
Sequence: 
2
Feast: 
Cathedra Petri
Office/Mass: 
L
Genre: 
A
Position: 
1
Cantus ID: 
204088
Mode: 
1
Differentia: 
3
Differentia database: 
1--h-h-g-f-gh-gf--4 69b