# Kazimierz Frąckowski
**Wikidata**: [Q94501681](https://www.wikidata.org/wiki/Q94501681)  
**Source**: https://4ort.xyz/entity/kazimierz-fr-ckowski


## References

1. BnF authorities
2. Catalog of the German National Library
3. Virtual International Authority File
4. Faceted Application of Subject Terminology