# Josef Grňa
**Wikidata**: [Q30317410](https://www.wikidata.org/wiki/Q30317410)  
**Source**: https://4ort.xyz/entity/josef-gr-a


## References

1. Czech National Authority Database
2. [Students of the Universities of Prague 1882–1945](http://is.cuni.cz/webapps/archiv/public/person/se/1639379042833488)
3. [Records of persons of interest](http://svazky.cz/test/svazkyMT.php?jmeno=Josef&prijm=Grna&dnar=11.08.1897&hledej=Hledat)
4. [Source](http://www.historiecssd.cz/g/grna-josef/)
5. [regional database of the Regional Library of Highlands](https://tritius.kkvysociny.cz/authority/863226)
6. [Source](https://encyklopedie.brna.cz/home-mmb/?acc=profil_osobnosti&load=2141)
7. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
8. Virtual International Authority File
9. Students of the Universities of Prague 1882–1945
10. [Source](http://svazky.cz/test/svazkyMT.php?jmeno=Josef&prijm=Grna&dnar=11.08.1897&hledej=Hledat)
11. Bibliography of the History of the Czech Lands
12. [Regional Database of the Central Bohemian Research Library in Kladno](https://ipac.svkkl.cz/arl-kl/cs/detail-kl_us_auth-p0031347-Grna-Josef-18971967)