# Pjotr Zemjatchenskij

> mineralogist, soil scientist (1856–1942)

**Wikidata**: [Q4191317](https://www.wikidata.org/wiki/Q4191317)  
**Source**: https://4ort.xyz/entity/pjotr-zemjatchenskij


## References

1. The “Prison Autobiography” by Nikolay Alexandrovich Maximov
2. IdRef
3. Czech National Authority Database
4. Source
5. NLR Employees
6. Virtual International Authority File
7. Q137732450