# Jan Černý-Niger

> Czech doctor

**Wikidata**: [Q1682462](https://www.wikidata.org/wiki/Q1682462)  
**Source**: https://4ort.xyz/entity/jan-ern-niger


## References

1. Czech National Authority Database
2. [The Fine Art Archive](https://cs.isabart.org/person/85972)
3. Virtual International Authority File
4. Bibliography of the History of the Czech Lands
5. Provenio