History - De profundis
Nov 19, 2018 (SirPL)
Added reference to Liber Usualis
sources
[{"chant_id":"331","source":"2","page":"388","sequence":"1","extent":"1"},{"chant_id":"331","source":"3","page":"1076","sequence":"1","extent":"1"}]
Added reference to Liber Usualis
sources
[{"chant_id":"331","source":"2","page":"388","sequence":"1","extent":"1"},{"chant_id":"331","source":"3","page":"1076","sequence":"1","extent":"1"}]