# Feliks Piestrak
**Wikidata**: [Q97542135](https://www.wikidata.org/wiki/Q97542135)  
**Source**: https://4ort.xyz/entity/feliks-piestrak


## References

1. Integrated Authority File
2. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
3. [Source](https://www.ipsb.nina.gov.pl/a/biografia/feliks-piestrak)
4. Sejm-Wielki.pl