# Ryszard Kowalczyk

> researcher

**Wikidata**: [Q86202784](https://www.wikidata.org/wiki/Q86202784)  
**Source**: https://4ort.xyz/entity/ryszard-kowalczyk-q86202784


## References

1. IdRef
2. [ORCID Public Data File 2023](https://pub.orcid.org/v3.0/0000-0003-0937-4028/employment/6637783)
3. [ORCID Public Data File 2023](https://pub.orcid.org/v3.0/0000-0003-0937-4028/employment/6250285)
4. [ORCID Public Data File 2023](https://pub.orcid.org/v3.0/0000-0003-0937-4028/employment/17021186)
5. [Source](https://viaf.org/viaf/data/viaf-20230206-links.txt.gz)
6. NUKAT
7. ORCID iD
8. [ORCID Public Data File 2020](https://pub.orcid.org/v3.0_rc1/0000-0003-0937-4028/external-identifiers/367729)
9. [ORCID Public Data File 2020](https://pub.orcid.org/v3.0_rc1/0000-0003-0937-4028/external-identifiers/367742)
10. National Library of Israel Names and Subjects Authority File