# Jaroslav Mastný

> Czech Esperantist

**Wikidata**: [Q20478906](https://www.wikidata.org/wiki/Q20478906)  
**Source**: https://4ort.xyz/entity/jaroslav-mastn-


## References

1. Czech National Authority Database
2. Students of the Universities of Prague 1882–1945
3. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
4. Provenio