# National Institute of Geophysics, Geodesy and Geography

> facility in Sofia, Bulgaria

**Wikidata**: [Q30254736](https://www.wikidata.org/wiki/Q30254736)  
**Source**: https://4ort.xyz/entity/national-institute-of-geophysics-geodesy-and-geography


## References

1. GRID Release 2017-05-22
2. Czech National Authority Database
3. Virtual International Authority File
4. [Source](https://web.archive.org/web/20240112184553/https://datacite.org/members/)
5. HAL