# Karl Theodor Groddeck
**Wikidata**: [Q55850838](https://www.wikidata.org/wiki/Q55850838)  
**Source**: https://4ort.xyz/entity/karl-theodor-groddeck


## References

1. Catalog of the German National Library
2. Deutsche Biographie
3. NUKAT
4. MAK
5. Virtual International Authority File