Nisi diligenter perfeceris

Source: 
Montecassino, Monumento Nazionale di Montecassino - Biblioteca, 542
Folio: 
097
Sequence: 
2
Feast: 
Agathae
Office/Mass: 
M
Genre: 
A
Position: 
7
Cantus ID: 
003881
Mode: 
4
Differentia: 
A
Differentia database: 
1--h-h-h-hjh-gg-e--4 254a