# Isaak Horowitz
**Wikidata**: [Q55852617](https://www.wikidata.org/wiki/Q55852617)  
**Source**: https://4ort.xyz/entity/isaak-horowitz


## References

1. Catalog of the German National Library
2. Virtual International Authority File
3. Faceted Application of Subject Terminology
4. Deutsche Biographie
5. CERL Thesaurus
6. LIBRIS
7. MAK