History - Joseph fili David
Mar 14, 2022 (fkchaud)
Add Graduale Romanum 1974 as a source
sources
[{"chant_id":"139","source":"2","page":"458","sequence":"1","extent":"1"},{"chant_id":"139","source":"3","page":"1403","sequence":"2","extent":"2"},{"chant_id":"139","source":"4","page":"552","sequence":"1","extent":"2"}]