In prole mater in partum

Source: 
Monza, Basilica di S. Giovanni Battista - Biblioteca Capitolare e Tesoro, 15/79
Marginalia: 
2
Folio: 
237r
Sequence: 
4
Feast: 
Assumptio Mariae
Office/Mass: 
M
Genre: 
A
Position: 
3.2
Cantus ID: 
003274
Mode: 
4
Differentia: 
6
Differentia database: 
1--h-h-h-h-h-g--4 10b