Haec est generatio

Source: 
Rouen, Bibliothèque municipale, 248 (olim A. 339)
Folio: 
107r
Sequence: 
2
Feast: 
Omnium Sanctorum
Office/Mass: 
M
Genre: 
A
Position: 
1.5
Cantus ID: 
002999
Mode: 
3
Differentia: 
B1
Differentia database: 
1--k-k-k-h-k-j--4 96a