# Czesław Olszewski
**Wikidata**: [Q65170044](https://www.wikidata.org/wiki/Q65170044)  
**Source**: https://4ort.xyz/entity/czes-aw-olszewski


## References

1. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
2. Virtual International Authority File
3. NUKAT
4. MAK
5. BnF authorities
6. Sejm-Wielki.pl