History - Montes Gelboe
May 25, 2021 (Jacques Perriere)
Liber Usualis page 986 + duplicate of 2172
remarks
Duplicate of 2172
sources
[{"chant_id":"11793","source":"3","page":"986","sequence":"2","extent":"2"},{"chant_id":"11793","source":"48","page":"540","sequence":"01","extent":"12"}]