# Karel Schäferna

> Czech hydrobiologist (1884–1950)

**Wikidata**: [Q55072283](https://www.wikidata.org/wiki/Q55072283)  
**Source**: https://4ort.xyz/entity/karel-sch-ferna


## References

1. Czech National Authority Database
2. [The Fine Art Archive](https://cs.isabart.org/person/52521)
3. Regional Database of the Central Bohemian Research Library in Kladno
4. Students of the Universities of Prague 1882–1945
5. Biographies of the Entomologists of the World
6. Bibliography of the History of the Czech Lands