# Nikolai Kachalov

> Russian chemist-technologist, specialist in the field of optical glass

**Wikidata**: [Q4217895](https://www.wikidata.org/wiki/Q4217895)  
**Source**: https://4ort.xyz/entity/nikolai-kachalov


## References

1. Great Soviet Encyclopedia (1969–1978)
2. Q137170397
3. Source
4. Virtual International Authority File