Deduc me domine in semitam

Source: 
Montecassino, Monumento Nazionale di Montecassino - Biblioteca, 542
Folio: 
059
Sequence: 
17
Feast: 
Fer. 2 per annum
Office/Mass: 
T
Genre: 
A
Cantus ID: 
002137
Mode: 
2
Differentia: 
1
Differentia database: 
1--f-f-e-ed-cd-d--4 153c