# Jan Danejkowicz-Ostrowski
**Wikidata**: [Q106399052](https://www.wikidata.org/wiki/Q106399052)  
**Source**: https://4ort.xyz/entity/jan-danejkowicz-ostrowski


## References

1. Catalog of the German National Library
2. Virtual International Authority File
3. CERL Thesaurus
4. Sejm-Wielki.pl