Isti sunt martyres Christi

Source: 
Piacenza, Basilica di S. Antonino - Biblioteca e Archivio Capitolari, 65
Folio: 
388v
Sequence: 
10
Feast: 
Gervasii, Protasii
Office/Mass: 
L
Genre: 
A
Position: 
1
Cantus ID: 
003440
Mode: 
1
Differentia: 
4
Differentia database: 
1--h-h-g-f-gh-gfed--4 72b