# Karl Friederichs
**Wikidata**: [Q95259085](https://www.wikidata.org/wiki/Q95259085)  
**Source**: https://4ort.xyz/entity/karl-friederichs-q95259085


## References

1. Integrated Authority File
2. Catalog of the German National Library
3. Virtual International Authority File
4. [Source](https://kalliope-verbund.info/DE-611-BF-110030)