# Janusz Gruchała

> Polish historian

**Wikidata**: [Q11720170](https://www.wikidata.org/wiki/Q11720170)  
**Source**: https://4ort.xyz/entity/janusz-grucha-a


## References

1. Integrated Authority File
2. Polish Science
3. [Source](https://nauka-polska.pl/#/profile/research?id=202453)
4. Virtual International Authority File
5. NUKAT
6. MAK
7. [Source](https://nauka-polska.pl/#/profile/scientist?id=201395&_k=cqt71j)
8. Bibliography of the History of the Czech Lands