# Pierre Louis Haegen
**Wikidata**: [Q112364795](https://www.wikidata.org/wiki/Q112364795)  
**Source**: https://4ort.xyz/entity/pierre-louis-haegen


## References

1. Integrated Authority File
2. BnF authorities
3. Czech National Authority Database
4. Virtual International Authority File
5. CiNii Research
6. Base de données des élites suisses