# Friedrich Siebert
**Wikidata**: [Q131600906](https://www.wikidata.org/wiki/Q131600906)  
**Source**: https://4ort.xyz/entity/friedrich-siebert-q131600906


## References

1. Catalog of the German National Library
2. NUKAT
3. CONOR.SI
4. Deutsche Digitale Bibliothek