History - Regali ex progenie
Nov 13, 2018 (SirPL)
Added reference to Liber Usualis
sources
[{"chant_id":"719","source":"2","page":"504C","sequence":"2","extent":"2"},{"chant_id":"719","source":"3","page":"1476F","sequence":"1","extent":"1"}]
Added reference to Liber Usualis
sources
[{"chant_id":"719","source":"2","page":"504C","sequence":"2","extent":"2"},{"chant_id":"719","source":"3","page":"1476F","sequence":"1","extent":"1"}]