Propter insuperabilem

Source: 
Oxford, Bodleian Library, MS. Canon. Liturg. 202 (olim 19314)
Folio: 
020v
Sequence: 
13
Feast: 
Joannis Evang.
Office/Mass: 
M
Genre: 
A
Position: 
2.2
Cantus ID: 
004397
Mode: 
?
Differentia: 
*