# Jan Lang
**Wikidata**: [Q95454797](https://www.wikidata.org/wiki/Q95454797)  
**Source**: https://4ort.xyz/entity/jan-lang-q95454797


## References

1. Czech National Authority Database
2. [Olomouc City Library regional database](https://tritius.kmol.cz/authority/772065)
3. [Students of the Universities of Prague 1882–1945](http://is.cuni.cz/webapps/archiv/public/person/se/1688702781934630)
4. Virtual International Authority File