# Jan Sztwiertnia

> Polish composer (1911-1940)

**Wikidata**: [Q11719202](https://www.wikidata.org/wiki/Q11719202)  
**Source**: https://4ort.xyz/entity/jan-sztwiertnia


## References

1. Room of Names
2. Czech National Authority Database
3. Faceted Application of Subject Terminology
4. Virtual International Authority File
5. Sejm-Wielki.pl