Principi Apostolorum Petro
On St Ephrem the Syrian
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Original text published before 1931: public domain in the US. Modern English translations (e.g. vatican.va's) may still be under copyright.
Cite this page
This catalogue
Principi Apostolorum Petro (1920). On St Ephrem the Syrian. docs.church. https://docs.church/principi-apostolorum-petro
Official citation
Benedict XV, Principi Apostolorum Petro (5 October 1920). https://www.papalencyclicals.net/ben15/b15prapp.htm