# Izydor Koszykowski

> Polish communist activist

**Wikidata**: [Q11714965](https://www.wikidata.org/wiki/Q11714965)  
**Source**: https://4ort.xyz/entity/izydor-koszykowski


## References

1. Czech National Authority Database
2. Virtual International Authority File
3. MAK
4. Sejm-Wielki.pl