# Stefan Janusz Bratkowski
**Wikidata**: [Q17864522](https://www.wikidata.org/wiki/Q17864522)  
**Source**: https://4ort.xyz/entity/stefan-janusz-bratkowski


## References

1. Integrated Authority File
2. Catalog of the German National Library
3. Virtual International Authority File
4. Sejm-Wielki.pl