Iste est qui pro lege

Source: 
Firenze (Florence), Biblioteca Medicea-Laurenziana, Conv. sopp. 560
Folio: 
192r
Sequence: 
10
Feast: 
Comm. unius Martyris
Office/Mass: 
E
Genre: 
A
Position: 
2
Cantus ID: 
003428
Mode: 
6T
Differentia: 
1
Differentia database: 
1--m-m-k-lm-l-k--4 T7aA