Unus ex duobus*

Source: 
New York, Columbia University - Rare Book and Manuscript Library, Plimpton MS 041
Folio: 
002v
Sequence: 
4
Feast: 
Andreae
Office/Mass: 
V
Genre: 
A
Position: 
M
Cantus ID: 
005279
Mode: 
*
Manuscript Reading Full Text (standardized spelling): 
Unus ex duobus*
Manuscript Reading Full Text (MS spelling): 
Unus ex duobus