# Johann Hardorf

> JohannHardorf

**Wikidata**: [Q94918925](https://www.wikidata.org/wiki/Q94918925)  
**Source**: https://4ort.xyz/entity/johann-hardorf


## References

1. CERL Thesaurus
2. Integrated Authority File
3. Virtual International Authority File
4. Catalog of the German National Library
5. Kalliope
6. Deutsche Biographie