# Jan Hadrávek
**Wikidata**: [Q95246763](https://www.wikidata.org/wiki/Q95246763)  
**Source**: https://4ort.xyz/entity/jan-hadr-vek


## References

1. Czech National Authority Database
2. Database of the Military Historical Archive
3. [Source](https://www.vuapraha.cz/wp-content/uploads/2022/04/hadravek_jan_11.02.1918.pdf)
4. Virtual International Authority File
5. [Database of the Military Historical Archive](http://www.vuapraha.cz/soldier/20467738)
6. Database of members of the Czechoslovak Republic of military units abroad for the World War II
7. [Database of the Military Historical Archive](http://www.vuapraha.cz/soldier/14957527)