# Heinrich Gräff
**Wikidata**: [Q19959637](https://www.wikidata.org/wiki/Q19959637)  
**Source**: https://4ort.xyz/entity/heinrich-gr-ff


## References

1. Integrated Authority File
2. Virtual International Authority File
3. [Source](http://uli.nli.org.il/F/?func=find-b&local_base=NLX10&find_code=UID&request=987010649649405171)