# Jan Ptaśnik

> Polish historian

**Wikidata**: [Q11718780](https://www.wikidata.org/wiki/Q11718780)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Jan_Ptaśnik)  
**Source**: https://4ort.xyz/entity/jan-pta-nik


## References

1. BnF authorities
2. Virtual International Authority File
3. CiNii Research
4. Internetowy Polski Słownik Biograficzny
5. Sejm-Wielki.pl
6. Bibliography of the History of the Czech Lands