# Otto Janssen

> German philosopher (1883–1967)

**Wikidata**: [Q2039378](https://www.wikidata.org/wiki/Q2039378)  
**Source**: https://4ort.xyz/entity/otto-janssen


## References

1. Integrated Authority File
2. Virtual International Authority File
3. [Source](https://kalliope-verbund.info/DE-611-BF-105231)
4. GEPRIS Historisch