Haec est generatio*

Source: 
Köln (Cologne), Erzbischöfliche Diözesan- und Dombibliothek, 215
Marginalia: 
R
Folio: 
172r
Sequence: 
9
Feast: 
Comm. plurimorum Martyrum
Office/Mass: 
M
Genre: 
A
Position: 
2.3
Cantus ID: 
002999
Mode: 
*
Addendum: 
023
Manuscript Reading Full Text (standardized spelling): 
Haec est generatio*
Manuscript Reading Full Text (MS spelling): 
Hec est generatio