# Klaus Gruna

> German author, active in Cloppenburg

**Wikidata**: [Q124845645](https://www.wikidata.org/wiki/Q124845645)  
**Source**: https://4ort.xyz/entity/klaus-gruna


## References

1. Integrated Authority File
2. archINFORM
3. Virtual International Authority File
4. [archINFORM](https://www.archinform.net/service/wd_aiarch.php)