Haec est virgo s*

Source: 
Praha (Prague), Národní knihovna České republiky (National Library), VI.E.4c
Folio: 
146v
Sequence: 
18
Feast: 
Brigidae
Office/Mass: 
L
Genre: 
A
Position: 
1
Cantus ID: 
003006
Manuscript Reading Full Text (standardized spelling): 
Haec est virgo s*
Indexing notes: 
MS: "Cum rel." In margine: "Ad bene. An. Quinque pru."