# Johannes Klein

> Czech mathematician and astronomer (1684-1762)

**Wikidata**: [Q1697847](https://www.wikidata.org/wiki/Q1697847)  
**Source**: https://4ort.xyz/entity/johannes-klein-q1697847


## References

1. Czech National Authority Database
2. [The Fine Art Archive](https://cs.isabart.org/person/69483)
3. Virtual International Authority File
4. Integrated Authority File
5. Klein, Johann (IV.) (BLKÖ)
6. CERL Thesaurus
7. Bibliography of the History of the Czech Lands