Unus est enim magister vester

Source: 
Cambridge, University Library, Mm.ii.9
Folio: 
167
Sequence: 
9
Feast: 
Fer. 3 Hebd. 2 Quad.
Office/Mass: 
L
Genre: 
A
Position: 
B
Cantus ID: 
005278
Mode: 
1
Differentia: 
7
Differentia database: 
1--h-h-g-f-g-gfedg--4 301a