# Sergey Obruchev

> Soviet geologist (1891-1965)

**Wikidata**: [Q4329921](https://www.wikidata.org/wiki/Q4329921)  
**Source**: https://4ort.xyz/entity/sergey-obruchev


## References

1. Great Soviet Encyclopedia (1969–1978)
2. Czech National Authority Database
3. Q137732450
4. Virtual International Authority File