# Johann Philipp Hagen
**Wikidata**: [Q23061881](https://www.wikidata.org/wiki/Q23061881)  
**Source**: https://4ort.xyz/entity/johann-philipp-hagen


## References

1. Hagen, Johann Philipp
2. Faceted Application of Subject Terminology
3. Base biographique
4. Virtual International Authority File
5. National Library of Israel Names and Subjects Authority File