# Ad Petri Cathedram

> encyclical

**Wikidata**: [Q345552](https://www.wikidata.org/wiki/Q345552)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Ad_Petri_Cathedram)  
**Source**: https://4ort.xyz/entity/ad-petri-cathedram


## References

1. Freebase Data Dumps. 2013