# Ireneusz Opacki

> Polish historian

**Wikidata**: [Q20030004](https://www.wikidata.org/wiki/Q20030004)  
**Source**: https://4ort.xyz/entity/ireneusz-opacki


## References

1. BnF authorities
2. [Source](https://nauka-polska.pl/#/profile/research?id=212240)
3. [Source](https://nauka-polska.pl/#/profile/research?id=87767)
4. [Source](https://nauka-polska.pl/#/profile/research?id=72732)
5. [Source](https://nauka-polska.pl/#/profile/research?id=64583)
6. [Source](https://nauka-polska.pl/#/profile/research?id=66534)
7. [Source](https://nauka-polska.pl/#/profile/research?id=62801)
8. [Source](https://nauka-polska.pl/#/profile/research?id=79492)
9. [Source](https://nauka-polska.pl/#/profile/research?id=95235)
10. [Source](https://nauka-polska.pl/#/profile/research?id=95049)
11. [Source](https://nauka-polska.pl/#/profile/research?id=89425)
12. [Source](https://nauka-polska.pl/#/profile/research?id=92414)
13. [Source](https://nauka-polska.pl/#/profile/research?id=89108)
14. general catalog of BnF
15. Catalog of the German National Library
16. Virtual International Authority File
17. [BnF authorities](http://data.bnf.fr/ark:/12148/cb12868069z)
18. National Library of Israel Names and Subjects Authority File