# Janusz Sobczak
**Wikidata**: [Q110225742](https://www.wikidata.org/wiki/Q110225742)  
**Source**: https://4ort.xyz/entity/janusz-sobczak-q110225742


## References

1. BnF authorities
2. NUKAT
3. Bibliography of the History of the Czech Lands
4. National Library of Israel Names and Subjects Authority File