# Otto Friedrich
**Wikidata**: [Q76152315](https://www.wikidata.org/wiki/Q76152315)  
**Source**: https://4ort.xyz/entity/otto-friedrich-q76152315


## References

1. Catalog of the German National Library
2. [Source](https://kalliope-verbund.info/DE-611-BF-120568)
3. Virtual International Authority File