# Petr Freiwillig

> Czech historian and publicist

**Wikidata**: [Q16308439](https://www.wikidata.org/wiki/Q16308439)  
**Source**: https://4ort.xyz/entity/petr-freiwillig


## References

1. Integrated Authority File
2. [Source](http://viaf.org/viaf/data/viaf-20170101-links.txt.gz)
3. Virtual International Authority File
4. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
5. Czech National Authority Database
6. Bibliography of the History of the Czech Lands