# Jan Gruntorád

> Czech geophysicist (1928–2005)

**Wikidata**: [Q95211121](https://www.wikidata.org/wiki/Q95211121)  
**Source**: https://4ort.xyz/entity/jan-gruntor-d


## References

1. Czech National Authority Database
2. [Records of persons of interest](http://svazky.cz/test/svazkyMT.php?jmeno=Jan&prijm=Gruntorad&dnar=19.03.1928&hledej=Hledat)
3. Virtual International Authority File
4. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
5. Database of the Terezín Memorial
6. [Source](http://svazky.cz/test/svazkyMT.php?jmeno=Jan&prijm=Gruntorad&dnar=19.03.1928&hledej=Hledat)
7. Bibliography of the History of the Czech Lands