# Leon Roppel
**Wikidata**: [Q10969623](https://www.wikidata.org/wiki/Q10969623)  
**Source**: https://4ort.xyz/entity/leon-roppel


## References

1. Integrated Authority File
2. Virtual International Authority File
3. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
4. Library of Congress Authorities
5. Czech National Authority Database
6. Sejm-Wielki.pl