# Harald Ludmann

> German author and engineer, active in Cologne

**Wikidata**: [Q125208630](https://www.wikidata.org/wiki/Q125208630)  
**Source**: https://4ort.xyz/entity/harald-ludmann


## References

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