Iste est qui pro lege

Source: 
Firenze (Florence), Arcivescovado - Biblioteca, s.c.
Marginalia: 
5
Folio: 
225v
Sequence: 
3
Feast: 
Comm. unius Martyris
Office/Mass: 
E
Genre: 
A
Position: 
2
Cantus ID: 
003428
Mode: 
6T
Differentia: 
1
Differentia database: 
1--m-ml-k-lm-l-k--4 T69i