History - Rerum Deus tenax vigor (Septem Dolorum)
Oct 26, 2026 (xmarteo)
Version, sources (where the rubric that defines this hymn), usage
sources
[{"chant_id":"20104","source":"3","page":"1632","sequence":"9","extent":"1"},{"chant_id":"20104","source":"48","page":"842","sequence":"9","extent":"1"}]
version
Solesmes 1960