# Friedrich Spigl
**Wikidata**: [Q21001511](https://www.wikidata.org/wiki/Q21001511)  
**Source**: https://4ort.xyz/entity/friedrich-spigl


## References

1. Catalog of the German National Library
2. Czech National Authority Database
3. Virtual International Authority File
4. NUKAT
5. [Regional Database of the Central Bohemian Research Library in Kladno](https://ipac.svkkl.cz/arl-kl/cs/detail-kl_us_auth-0387560-Spigl-Friedrich-1860)