# Ludwig Berg
**Wikidata**: [Q89276939](https://www.wikidata.org/wiki/Q89276939)  
**Source**: https://4ort.xyz/entity/ludwig-berg


## References

1. Catalog of the German National Library
2. Virtual International Authority File
3. Catalogue of the Library of the Pontifical University of the Holy Cross
4. BnF authorities
5. CONOR.SI