# Zygmunt Hertz
**Wikidata**: [Q9392889](https://www.wikidata.org/wiki/Q9392889)  
**Source**: https://4ort.xyz/entity/zygmunt-hertz


## References

1. BnF authorities
2. general catalog of BnF
3. Virtual International Authority File
4. Sejm-Wielki.pl