# Helle Simm

> Estonian hydrobiologist and hydrochemist (1920-1991)

**Wikidata**: [Q12363749](https://www.wikidata.org/wiki/Q12363749)  
**Source**: https://4ort.xyz/entity/helle-simm


## References

1. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
2. Integrated Authority File
3. Virtual International Authority File