# Andrzej Sieczkowski
**Wikidata**: [Q109558312](https://www.wikidata.org/wiki/Q109558312)  
**Source**: https://4ort.xyz/entity/andrzej-sieczkowski


## References

1. Czech National Authority Database
2. data.bibliotheken.nl
3. Virtual International Authority File
4. Personal Authority Wikibase of the Czech Republic