# Epistola super reformatione antiqui kalendarii

> work by Johannes de Muris

**Wikidata**: [Q136527920](https://www.wikidata.org/wiki/Q136527920)  
**Source**: https://4ort.xyz/entity/epistola-super-reformatione-antiqui-kalendarii


## References

1. [Source](https://arlima.net/no/16685)