# Karl Ludwig Unrath
**Wikidata**: [Q2238393](https://www.wikidata.org/wiki/Q2238393)  
**Source**: https://4ort.xyz/entity/karl-ludwig-unrath


## References

1. Catalog of the German National Library
2. BnF authorities
3. Virtual International Authority File
4. CiNii Research
5. International Music Score Library Project
6. CERL Thesaurus