History - Sub tuum praesidium
Oct 23, 2013 (Mark)
added source and mode
mode
7
sources
[{"chant_id":"2064","source":"3","page":"1861","sequence":"1","extent":"1"},{"chant_id":"2064","source":"5","page":"143","sequence":"1","extent":"2"},{"chant_id":"2064","source":"10","page":"180*","sequence":"2","extent":"1"}]