# Klemens Kołaczkowski
**Wikidata**: [Q11739969](https://www.wikidata.org/wiki/Q11739969)  
**Source**: https://4ort.xyz/entity/klemens-ko-aczkowski


## References

1. Czech National Authority Database
2. CERL Thesaurus
3. Catalog of the German National Library
4. Integrated Authority File
5. NUKAT
6. Bibliography of the History of the Czech Lands
7. MAK
8. Virtual International Authority File