# Martin Keilhacker

> German educationist and psychologist (1894-1989)

**Wikidata**: [Q1904225](https://www.wikidata.org/wiki/Q1904225)  
**Source**: https://4ort.xyz/entity/martin-keilhacker


## References

1. Integrated Authority File
2. Index Theologicus
3. Virtual International Authority File
4. CiNii Research
5. Brockhaus Enzyklopädie
6. CONOR.SI
7. Kalliope