# Johann Wilfried Hammer
**Wikidata**: [Q94905106](https://www.wikidata.org/wiki/Q94905106)  
**Source**: https://4ort.xyz/entity/johann-wilfried-hammer


## References

1. Integrated Authority File
2. Catalog of the German National Library
3. Czech National Authority Database
4. [Source](https://kalliope-verbund.info/DE-611-BF-70106)