# Wilhelm Keller

> philosopher, psychologist (1909-1987)

**Wikidata**: [Q72928946](https://www.wikidata.org/wiki/Q72928946)  
**Source**: https://4ort.xyz/entity/wilhelm-keller-q72928946


## References

1. Integrated Authority File
2. Catalog of the German National Library
3. Virtual International Authority File
4. [Source](https://zbcollections.ch/home/#/content/c952f223ca584edd8725e574ebe18937)
5. NUKAT
6. Historical Dictionary of Switzerland