# Martin Hartmann

> German philosopher and sociologist

**Wikidata**: [Q1903975](https://www.wikidata.org/wiki/Q1903975)  
**Source**: https://4ort.xyz/entity/martin-hartmann-q1903975


## References

1. Integrated Authority File
2. general catalog of BnF
3. Virtual International Authority File
4. CiNii Research
5. Base de données des élites suisses