History - Ostende nobis
Sep 30, 2016 (Locutus)
added page reference for 1974 Graduale
sources
[{"chant_id":"1115","source":"2","page":"2","sequence":"2","extent":"2"},{"chant_id":"1115","source":"3","page":"320","sequence":"2","extent":"2"},{"chant_id":"1115","source":"4","page":"16","sequence":"2","extent":"2"},{"chant_id":"1115","source":"16","page":"167","sequence":"1","extent":"1"}]