# Ludwik Piotrowicz

> Polish historian

**Wikidata**: [Q11763893](https://www.wikidata.org/wiki/Q11763893)  
**Source**: https://4ort.xyz/entity/ludwik-piotrowicz


## References

1. BnF authorities
2. general catalog of BnF
3. Virtual International Authority File
4. CiNii Research
5. NUKAT
6. CONOR.SR
7. MAK
8. Sejm-Wielki.pl