# Sergey Grigoryev

> Russian geographer (1874-1931)

**Wikidata**: [Q4149327](https://www.wikidata.org/wiki/Q4149327)  
**Source**: https://4ort.xyz/entity/sergey-grigoryev-q4149327


## References

1. Great Soviet Encyclopedia (1969–1978)
2. Dimitri Ivanovich Litvinov: Materials for a Biography
3. Virtual International Authority File