# Leon Piasecki
**Wikidata**: [Q19788747](https://www.wikidata.org/wiki/Q19788747)  
**Source**: https://4ort.xyz/entity/leon-piasecki


## References

1. Virtual International Authority File
2. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
3. Faceted Application of Subject Terminology
4. Integrated Authority File
5. Sejm-Wielki.pl