# Jan Oswald

> Czech geologist, mineralogist, educator and science writer (1890–1970)

**Wikidata**: [Q12022927](https://www.wikidata.org/wiki/Q12022927)  
**Source**: https://4ort.xyz/entity/jan-oswald-q12022927


## References

1. Czech National Authority Database
2. Students of the Universities of Prague 1882–1945
3. Virtual International Authority File
4. Biographies of the Entomologists of the World