# Walter Guttmann
**Wikidata**: [Q59525602](https://www.wikidata.org/wiki/Q59525602)  
**Source**: https://4ort.xyz/entity/walter-guttmann-q59525602


## References

1. Catalog of the German National Library
2. Virtual International Authority File
3. CiNii Research
4. CONOR.SI
5. NUKAT