# Friedrich Pietzker
**Wikidata**: [Q59782917](https://www.wikidata.org/wiki/Q59782917)  
**Source**: https://4ort.xyz/entity/friedrich-pietzker


## References

1. Czech National Authority Database
2. Integrated Authority File
3. Faceted Application of Subject Terminology
4. NUKAT
5. Virtual International Authority File
6. Library of Congress Control Number