History - Misit Dominus

Jan 11, 2018 (bbloomf)

added liber usualis as source

sources
[{"chant_id":"932","source":"2","page":"68","sequence":"1","extent":"1"},{"chant_id":"932","source":"3","page":"485","sequence":"1","extent":"2"},{"chant_id":"932","source":"4","page":"261","sequence":"1","extent":"2"},{"chant_id":"932","source":"16","page":"432","sequence":"1","extent":"2"}]