Istorum*

Source: 
Worcester, Cathedral - Music Library, F.160 (olim 1247) (with hymnal)
Folio: 
234v
Sequence: 
14
Feast: 
Christophori
Office/Mass: 
V
Genre: 
A
Position: 
R
Cantus ID: 
003451
Mode: 
*
Addendum: 
P: 339