# Jan Betlach
**Wikidata**: [Q95148222](https://www.wikidata.org/wiki/Q95148222)  
**Source**: https://4ort.xyz/entity/jan-betlach


## References

1. Czech National Authority Database
2. [regional database of the Regional Library of Highlands](https://tritius.kkvysociny.cz/authority/1087148)
3. Virtual International Authority File
4. Bibliography of the History of the Czech Lands
5. [Regional Database of the Central Bohemian Research Library in Kladno](https://ipac.svkkl.cz/arl-kl/cs/detail-kl_us_auth-0371237-Betlach-Jan-1947)