# Ludwig Geist
**Wikidata**: [Q55903126](https://www.wikidata.org/wiki/Q55903126)  
**Source**: https://4ort.xyz/entity/ludwig-geist


## References

1. CERL Thesaurus
2. Catalogue of the Unione Romana Biblioteche Scientifiche
3. [Source](http://thesaurus.cerl.org/record/cnp01221934)