# Karel Jan Hraba
**Wikidata**: [Q88300988](https://www.wikidata.org/wiki/Q88300988)  
**Source**: https://4ort.xyz/entity/karel-jan-hraba


## References

1. Czech National Authority Database
2. Virtual International Authority File
3. [Source](http://biography.hiu.cas.cz/Personal/index.php?curid=48834)
4. Provenio
5. HMML Authority File