# Wilhelm Classen
**Wikidata**: [Q94945374](https://www.wikidata.org/wiki/Q94945374)  
**Source**: https://4ort.xyz/entity/wilhelm-classen-q94945374


## References

1. Catalog of the German National Library
2. [Source](https://kalliope-verbund.info/DE-611-BF-125267)