# Friedrich Spach
**Wikidata**: [Q106528354](https://www.wikidata.org/wiki/Q106528354)  
**Source**: https://4ort.xyz/entity/friedrich-spach


## References

1. Catalog of the German National Library
2. NUKAT
3. CERL Thesaurus
4. [Source](http://thesaurus.cerl.org/record/cnp01263349)
5. [Source](http://thesaurus.cerl.org/record/cni00072910)