History - Jacob autem
Nov 14, 2018 (SirPL)
Added reference to Liber Usualis
sources
[{"chant_id":"534","source":"2","page":"[89B]","sequence":"1","extent":"1"},{"chant_id":"534","source":"3","page":"1277B","sequence":"2","extent":"2"}]
Added reference to Liber Usualis
sources
[{"chant_id":"534","source":"2","page":"[89B]","sequence":"1","extent":"1"},{"chant_id":"534","source":"3","page":"1277B","sequence":"2","extent":"2"}]