# Supremum officium

> Motu proprio by Pius X

**Wikidata**: [Q28312687](https://www.wikidata.org/wiki/Q28312687)  
**Source**: https://4ort.xyz/entity/supremum-officium


## References

1. [Source](http://www.vatican.va/archive/aas/documents/AAS-05-1913-ocr.pdf)